Heritage Open Days
11–20 September 2026
England's national festival of free heritage access. The official 2026 search currently lists thousands of site openings, walks, talks and behind-the-scenes visits.
Open Heritage Open Days ↗Usually locked, ticketed or overlooked
Proper free-entry dates for museums, historic houses, archives, industrial sites and buildings that are normally paid or closed. Every highlighted event links to its official listing, because “probably free” is how wallets get mugged politely.
Source-checked highlights
Checked 26 July 2026
11–13 September 2026
Anne of Cleves House, Lewes, East Sussex
Free access to the Tudor house, period rooms, domestic-history collection and garden. The official listing confirms the usual admission charge is waived for Heritage Open Days.
11–13 September 2026
Lewes Castle & Museum, Lewes, East Sussex
Free Heritage Open Days entry to the Norman castle, panoramic keep and Museum of Sussex Archaeology. Normally a paid visitor attraction.
11–12 September 2026
Arlington Court National Trust, Barnstaple, Devon
Free entry to Arlington Court, including the house and carriage museum, plus free outdoor history walks and cellar tours. Last house and museum entry is 3.30pm.
11–12 September 2026
Whitchurch Museum & Archives Heritage Centre, Whitchurch, Shropshire
A free museum opening featuring research into Whitchurch women who ran businesses during the late nineteenth and early twentieth centuries.
11 September 2026
Abbey House Museum, Leeds, West Yorkshire
A free anniversary lecture and community-memory session about Abbey House Museum. Advance booking through Leeds Ticket Hub is required.
11 September 2026
Arbeia Roman Fort & Museum, South Shields, Tyne and Wear
A free 90-minute tour of the Roman fort and museum. Tickets cost nothing, but advance booking is required and opens on 31 August.
11, 12, 15, 16, 18 & 19 September 2026
Newhaven Museum, Newhaven, East Sussex
Free entry to the refurbished museum and its maritime, industrial, wartime and social-history displays, including the photographic archive.
Whole-UK coverage
Unfleeced highlights a manageable set of checked openings. These official directories are the complete programme sources and remain the final authority for availability, booking and cancellations.
11–20 September 2026
England's national festival of free heritage access. The official 2026 search currently lists thousands of site openings, walks, talks and behind-the-scenes visits.
Open Heritage Open Days ↗5–27 September 2026, by area
Four official weekends of free access across Scotland. Participating council areas run on different weekends, so check the area timetable before travelling.
Open Scottish Civic Trust — Doors Open Days ↗September 2026
Cadw's annual programme offers free entry, events or guided tours at more than 200 historic sites, landmarks and places that are sometimes normally closed.
Open Cadw — Open Doors ↗12–13 September 2026
Northern Ireland's once-a-year opportunity to explore historic buildings and exclusive sites rarely open to the public, with talks, tours and activities.
Open Department for Communities Northern Ireland ↗Make a free weekend of it