Free Castles to Visit in the UK

There’s a particular kind of magic in stumbling across a castle you didn’t pay a penny to enter — just you, a ruined gatehouse, and a few centuries of history sitting quietly in a field. The UK is scattered with these places: sites cared for by local councils, charities, or simply left open to the public because they’re on common land or unenclosed coastline.

If you’re planning a camping trip around the country’s heritage (as regular readers of Campsites and Castles know we love to do), free castles are a brilliant way to pad out an itinerary without denting the holiday budget. This guide rounds up the best free castles to visit in the UK, organised by nation, with practical notes on parking, accessibility, and what to expect when you arrive.

For a broader look at the country’s castles — free and paid — see The Complete Guide to UK Castles: England, Scotland, Wales & Northern Ireland.

Why Some UK Castles Are Free to Visit

Before diving into the list, it helps to understand why some sites charge admission and others don’t:

• Ruined vs. maintained sites. Castles that are largely ruins with no roofed interiors, ticket offices, or staffed visitor centres are often free, since there’s less infrastructure to fund.
• Ownership. Sites managed by local councils or left as scheduled monuments on open access land are frequently free, whereas English Heritage, Cadw, and Historic Scotland properties usually charge (though many offer free entry to members).
• Location. Castles on clifftops, hillsides, or common land with no boundary fence are naturally harder to charge for and are often left open year-round.

Worth noting: “free” usually means free to walk the grounds and exterior. Always check ahead, as opening arrangements can change with the seasons or ongoing conservation work.

Free Castles in England

Barnard Castle, County Durham — The substantial ruins overlooking the River Tees are managed by English Heritage but the surrounding grounds and river walk are free to explore, with excellent photo opportunities from the riverside path.

Corfe Castle, Dorset (exterior views) — While the National Trust charges for entry to the ruins themselves, the village views and surrounding walking trails offer some of the most photographed free castle vistas in England.

Bramber Castle, West Sussex — A modest but atmospheric Norman motte-and-bailey ruin, free to visit year-round and ideal for a short stop on a South Downs camping trip.

Clifford’s Tower, York (grounds) — The tower itself has an entry fee, but the grounds and mound are freely accessible and give sweeping views over York.

Pevensey Castle, East Sussex (exterior) — The Roman and medieval walls can be viewed and walked around for free, with the interior available at a small charge.

Free Castles in Scotland

Scotland’s right-to-roam culture and abundance of unmanned ruins make it one of the best regions in the UK for free castle visits.

Dunstaffnage Castle grounds and Dunollie Castle, Argyll — Dunollie in particular is free and beautifully positioned above Oban Bay.

Old Slains Castle, Aberdeenshire — A dramatic clifftop ruin with no ticket office, no fence, and open access at any time — a favourite among photographers and reportedly a partial inspiration for Bram Stoker’s Dracula.

Castle Sinclair Girnigoe, Caithness — One of the most spectacular free ruins in the country, perched on a headland near Wick.

Ravenscraig Castle, Fife — Set in a public park in Kirkcaldy, free to explore with coastal views.

Duffus Castle, Moray — A striking motte-and-bailey ruin managed by Historic Environment Scotland with free access.

Free Castles in Wales

Dolbadarn Castle, Snowdonia — A single striking tower overlooking Llyn Padarn, free to visit and a short, scenic walk from Llanberis — perfect for campers touring North Wales.

Dinas Bran, Llangollen — A hilltop ruin reached via a steep but rewarding walk, with no entry fee and panoramic views over the Dee Valley.

Ogmore Castle, Vale of Glamorgan — A free riverside ruin with stepping stones across the Ewenny River, popular with families.

Carn Fadryn hillfort and castle remains, Llŷn Peninsula — A wilder, more remote option for those wanting a proper walk to their castle.

Montgomery Castle, Powys — A ruined 13th-century clifftop fortress overlooking the Welsh border town of Montgomery, with sweeping views into England on a clear day. Entry is free and the site is rarely crowded, making it a peaceful stop for campers exploring mid-Wales.

Free Castles in Northern Ireland

Dunluce Castle (exterior views), County Antrim — The clifftop ruin along the Causeway Coast has an entry fee for the interior, but coastal path views are free and dramatic.

Greencastle, County Down — A National Trust-adjacent ruin with free access, overlooking Carlingford Lough.

Harry Avery’s Castle, County Tyrone — One of the earliest Gaelic stone castles in Ireland, free to visit and refreshingly uncrowded.

Tips for Visiting Free Castles

• Wear proper footwear. Free sites are rarely paved or accessible in the way paid attractions are — expect uneven ground, especially at cliffside and hilltop ruins.
• Bring your own information. Without a ticket office, you won’t get a guidebook or interpretation panels at every site, so it’s worth reading up before you go.
• Time it right. Early morning or late afternoon light is best for photography, and free sites are far less crowded outside midday in peak season.
• Check the tide and weather. Several of the best free castles (Dunstanburgh’s approach, coastal Scottish ruins) can be affected by tides or exposed conditions.
• Combine with a campsite nearby. Many of these castles pair beautifully with a night or two under canvas — see our guide to Campsites Near UK Castles for site-by-site recommendations.

Genuinely Memorable Day Out

Free castles prove you don’t need a hefty entry fee to have a genuinely memorable heritage day out. Whether it’s a clifftop ruin in Aberdeenshire or a quiet motte-and-bailey in the Welsh hills, these sites offer the same sense of history and atmosphere as their ticketed counterparts — just with a little more solitude, and a little more adventure required to reach them.

Planning a trip around several of these? Check out our regional castle guides and campsite recommendations to build a full heritage itinerary.