Glastonbury Tor rises 158 metres above the flat Somerset Levels, a steep, conical hill crowned by the roofless tower of St Michael’s Church, visible for miles in every direction. It’s a genuinely strange place to stand: a natural hill, once a real island surrounded by marsh and open water, that has been a site of pilgrimage, myth-making and outright invention for well over a thousand years. It’s also free to visit, owned by the National Trust, and open at all hours, every day of the year. This guide covers the Tor’s documented history, the layers of legend built on top of it, most famously its long association with King Arthur and the Isle of Avalon, and everything needed to actually plan a visit.

History of Glastonbury Tor

From Island to Hilltop: Geology and Early Settlement

Glastonbury Tor’s distinctive shape comes down to geology: a conical hill of clay and Blue Lias stone, capped with harder sandstone that resisted the erosion which wore away the softer surrounding land over millions of years. Before the Somerset Levels were drained for farmland from the 18th century onward, this whole region was a wide expanse of marsh and shallow, tidal water. The Tor genuinely stood as an island rising out of that water, which is a large part of why it came to be identified with a mythical island in the first place.

Archaeological finds on the Tor date back to the Iron Age and Roman periods, and excavations carried out between 1964 and 1966 revealed evidence of activity on the summit during the 5th to 7th centuries, the so-called Dark Ages, including postholes suggesting an early timber structure and what’s been interpreted as a monk’s hermitage. None of this points to permanent, large-scale occupation, but it does confirm the hilltop was visited and used with some regularity for well over a thousand years before the medieval church that now defines it was ever built.

The Terraces: A Mystery in Seven Rings

Seven deep, roughly symmetrical terraces wrap around the sides of the Tor, and nobody has ever conclusively established why. The National Trust itself, which manages the site, states plainly that their origin is uncertain. Three main theories compete: that they’re agricultural, cut for ploughing or growing vines in the medieval period; that they’re the remains of Iron Age defensive ramparts, similar to nearby hillforts like Cadbury Castle; or that they formed a spiral processional path, a kind of pilgrim’s labyrinth, leading walkers around the hill seven times before reaching the church at the top.

Each explanation has a real problem. The agricultural theory struggles to explain why terracing appears on the Tor’s north-facing slopes too, which would get little useful sun for crops. The defensive-rampart theory doesn’t match the standard pattern of Iron Age ramparts elsewhere, which typically use three or four rings of banks and ditches around a defensible enclosure, not seven rings around a summit too small to hold a community. The labyrinth theory is the most romantic and the hardest to prove archaeologically, though the historian Ronald Hutton has suggested the terraces may represent a medieval spiral walkway comparable to one at Whitby Abbey. In practice, all three explanations remain live possibilities, and that unresolved mystery is part of what keeps drawing people back to look at them.

The First Church and the 1275 Earthquake

A timber church dedicated to St Michael was built on the summit, likely in the 11th or 12th century. On 11 September 1275, a genuine and well-documented earthquake struck southern England, felt as far away as London, Canterbury and Wales, with an estimated magnitude greater than 5 and an epicentre thought to lie somewhere around Portsmouth or Chichester, not in Somerset itself. The quake destroyed the timber church on the Tor outright, though some researchers now argue the building’s exposed position on a steep, narrow hilltop may have made it especially vulnerable regardless of exactly where the quake was centred.

A second, larger stone church, again dedicated to St Michael, was built roughly fifty years later under Abbot Adam of Sodbury, reusing the earlier foundations and adding stained glass and decorated floor tiles. This church survived, functioning as what was likely a daughter house of nearby Glastonbury Abbey, until the Dissolution of the Monasteries in 1539, when it was demolished, leaving only its tower standing. That tower, restored and partially rebuilt several times since, is the roofless structure that still crowns the Tor today, now a Grade I listed building.

The Legend of King Arthur and the Isle of Avalon

Glastonbury’s identification with Avalon, the mystical island where the mortally wounded King Arthur was said to have been taken after his final battle, is the single most famous legend attached to the Tor. The connection rests on real geography: Glastonbury genuinely was an island for much of its early history, surrounded by the marshy waters of the Somerset Levels, which made it a plausible physical match for the legendary Avalon described in Arthurian romance. According to tradition, Arthur and his knights of the Round Table came here in search of the Holy Grail, said to have been brought to Glastonbury by Joseph of Arimathea, and the Cauldron of Rebirth, a treasure of Celtic myth guarded, in legend, by a supernatural lord beneath the hill itself.

The wider legend also connects Glastonbury to Christ himself: one popular tale holds that Jesus visited Glastonbury as a boy, brought here by Joseph of Arimathea on a tin-trading voyage to England’s south west. There is no historical evidence for this visit, and it should be treated as folklore rather than fact, but it’s a genuinely important piece of English cultural mythology in its own right, since it directly inspired William Blake’s poem “Jerusalem,” later set to music and adopted as a kind of unofficial English anthem: “And did those feet in ancient time / Walk upon England’s mountains green? / And was the Holy Lamb of God / On England’s pleasant pastures seen?”

The 1191 ‘Discovery’ of Arthur’s Grave

The event that cemented Glastonbury’s identity as Avalon in the medieval imagination happened not on the Tor itself but at Glastonbury Abbey nearby, in 1191, and it’s worth being clear-eyed about it, since it’s a case where the historical record and the legend can be separated with real confidence. On 24 May 1184, a devastating fire tore through the abbey, destroying its church, cloisters, and an irreplaceable collection of relics housed in what was believed to be Britain’s oldest church building. The monks urgently needed money to rebuild, and pilgrim donations were their main source of income.

In 1191, monks digging in the abbey’s old cemetery announced they had found a grave containing the skeletons of a very tall man and a woman, buried in a hollowed oak coffin, along with a lead cross inscribed, according to the chronicler Gerald of Wales, “Here lies buried the renowned King Arthur, with Guinevere his second wife, in the Isle of Avalon.” The bones were moved into the church and later placed in a black marble tomb before the high altar, and pilgrim numbers, and abbey income, rose sharply as a direct result. Modern historians and archaeologists are near-unanimous that this was a staged discovery rather than a genuine one: it followed the financially catastrophic fire by only a few years, the lettering style on the cross doesn’t match the sixth century in which a historical Arthur would have lived, and King Henry II, whose political interests in England’s claim over Wales were well served by locating Arthur’s grave on English soil, is recorded by Gerald of Wales as having pointed the monks toward the spot in the first place. It should be understood as a medieval publicity exercise, skilfully executed, rather than an archaeological fact, but its effect on Glastonbury’s reputation was entirely real and has never really faded.

The Execution of Richard Whiting, 1539

The Tor’s history has a genuinely dark chapter too. During the English Reformation, as Henry VIII’s commissioners moved to suppress England’s monasteries, Glastonbury Abbey was seized and dismantled. Richard Whiting, the last Abbot of Glastonbury, refused to surrender the abbey’s wealth and was tried, convicted, and sentenced to death for treason. In 1539, he was hanged, drawn and quartered on the summit of Glastonbury Tor itself, alongside two of his monks, in full view of the surrounding countryside, a deliberate and public act of state violence intended to make an example of continued resistance to the Dissolution. The tower that still stands on the Tor today is the same structure that witnessed this execution.

Pagan Legend: Gwyn ap Nudd and the Fairy King

Layered beneath, and predating, the Christian and Arthurian legends is an older Celtic tradition: that a hidden cave beneath the Tor leads into Annwn, the Celtic Otherworld, ruled over by Gwyn ap Nudd, lord of the fairies and of the underworld in Welsh mythology. This pre-Christian association is part of why Glastonbury Tor has functioned continuously as what the National Trust itself calls “a spiritual magnet for Pagans and Christians” alike, two belief systems that rarely share the same sacred ground so openly, layered on top of each other across more than a millennium at exactly the same physical location.

Visiting Glastonbury Tor: Practical Information

Details below were checked directly against the National Trust’s official website (nationaltrust.org.uk) on 3 September 2026. As with any open-access site, check the official page before travelling any real distance, in case of temporary access changes.

Admission: Free, and open to the public year-round, dawn to dusk. No National Trust membership or ticket is required.

How long to allow: Most visitors budget 60 to 90 minutes in total, including the walk up from town parking. Give yourself at least 20 to 30 minutes at the summit itself to properly take in the 360-degree views before heading back down.

Getting there on foot: The Tor is a short walk from Glastonbury town centre, eastwards along the A361. The National Trust’s recommended route runs via Wellhouse Lane, which has a flat, laid, concrete path with a bench roughly halfway up, helping to reduce erosion from footfall. A steeper, more direct route also climbs from the western base; both routes are on grass or concrete rather than fully paved, which matters in wet weather, and the final stretch to the summit is genuinely steep on either approach.

Parking: There is no car park at the Tor itself, aside from two designated Blue Badge bays on Stonedown Lane. The nearest fee-paying car park is at Draper and Co on Chilkwell Street, BA6 8DB, about a 10-minute walk away. A seasonal Park & Ride (not run by the National Trust) also operates from Glastonbury town centre, BA6 9EW, typically between April and September; check current dates before relying on it.

By train: The nearest railway station is Castle Cary, from where a taxi or bus connection is needed to complete the journey to Glastonbury.

By bus: The First 377 service (Wells–Yeovil) stops within half a mile of the site.

Facilities: There are no toilets, shelter, café or water available on the Tor itself. Bring water, particularly in warmer months, since the summit is fully exposed with no shade on the ascent or at the top.

Accessibility: This is a genuinely challenging site for visitors with mobility restrictions, and it’s worth knowing that clearly before planning a visit. The paths up to the summit are concrete but steep throughout, with slopes and, at the Chalice Well access point, unmarked steps without handrails; there is no step-free level access to the top. A bench is provided roughly halfway up the Wellhouse Lane route. Full detail is available via the National Trust’s AccessAble guide, linked from the official Glastonbury Tor page.

Dogs: Welcome under close control and, ideally, kept on a lead, since sheep and cattle graze the Tor as part of its traditional land management. The National Trust rates it a one-pawprint (rather than the top rating) dog-friendly site for this reason.

What to wear: Sturdy, grippy footwear is genuinely important, since the grass paths become slippery in any moisture and the descent is steeper than it looks from below. A windproof layer is worth carrying regardless of season, since wind speeds noticeably increase at the exposed summit compared to the surrounding land.

Managing body: Glastonbury Tor is owned and managed by the National Trust, and is also a scheduled monument, with St Michael’s Tower separately protected as a Grade I listed building.

Contact: Phone 01934 844518, email glastonburytor@nationaltrust.org.uk.

Frequently Asked Questions

Is Glastonbury Tor free to visit?

Yes. It’s owned by the National Trust but doesn’t require membership or a ticket, since it’s open, unticketed countryside, accessible free of charge dawn to dusk, every day of the year.

Is King Arthur actually buried at Glastonbury?

Almost certainly not, and there’s little solid evidence a historical King Arthur existed at all. Monks at Glastonbury Abbey claimed to discover his and Queen Guinevere’s grave in 1191, a few years after a fire had left the abbey in urgent need of funds and pilgrim income. Most historians today regard the discovery as a staged medieval publicity exercise rather than a genuine find.

How is Glastonbury Tor connected to King Arthur and Avalon?

Glastonbury has long been identified with Avalon, the island where the wounded Arthur was taken after his final battle, partly because the Tor genuinely was surrounded by marsh and open water for much of its early history, making it a plausible real-world match for the legendary island. Arthur and his knights are said in tradition to have sought the Holy Grail and the Cauldron of Rebirth here.

Is there parking at Glastonbury Tor?

Not directly at the site, aside from two Blue Badge-only spaces on Stonedown Lane. The nearest fee-paying car park is at Draper and Co on Chilkwell Street, about a 10-minute walk away, and a seasonal Park & Ride runs from Glastonbury town centre between roughly April and September.

How long does it take to climb Glastonbury Tor?

The walk up takes roughly 20 to 30 minutes depending on the route and your pace, with a genuinely steep final stretch on both main paths. Most visitors budget 60 to 90 minutes total, including the walk from town parking and time to enjoy the summit.

Was Glastonbury Tor once an island?

Yes, genuinely. Before the Somerset Levels were drained for farmland from the 18th century onward, the surrounding low ground was marsh and shallow tidal water, and the Tor stood as a real, physical island above it, which is exactly why it became associated with the mythical Isle of Avalon.

What are the seven terraces on Glastonbury Tor for?

Nobody knows for certain, and the National Trust itself describes their origin as a genuine mystery. The leading theories are that they’re medieval agricultural terracing, Iron Age defensive earthworks, or a spiral pilgrim’s path leading to the summit church, but none of these explanations fully accounts for the terraces’ shape and pattern.

Is Glastonbury Tor accessible for wheelchair users?

No, not really. The paths to the summit are steep throughout with no step-free level access, and one access point has unmarked steps without handrails. It’s a genuinely challenging site for anyone with limited mobility, and worth knowing that clearly before planning a visit.

Glastonbury Tor pairs naturally with Glastonbury Abbey and the town’s Chalice Well gardens, both a short walk away. Browse the wider Landmarks & Monuments guides, or visit the England hub for the full picture of the country’s history and best places to visit.