Every September, Heritage Open Days unlock the doors to some of England’s most fascinating historic sites—and Sussex is no exception. Taking place from 12 – 21 September, this is your chance to explore hidden gems and cultural treasures across Sussex, for free and discover what makes Sussex 'Distinctly Different'.
East Sussex Highlights
Bull House, Lewes
15th Century Bull House was once lived in by Thomas Paine, author of The Rights of Man and a key influence in the American War of Independence.
Anne of Cleves House, Lewes
Discover Tudor life in this beautifully preserved 15th-century timber-framed house, once owned by Henry VIII’s fourth wife.
Alfriston Clergy House
Nestled in the Cuckmere Valley, this was the first building acquired by the National Trust. Explore its medieval charm and archaeological finds.
Coastguard Cottages, Seaford
Perched on the clifftop at Seaford Head, with the famous Seven Sisters as the backdrop, this is one of the most photographed buildings in the country, starring in film and TV.
Check participating times, dates and find out more about East Sussex Heritage open days here.
West Sussex Highlights
Arundel Museum
Learn about the town’s rich history, from Roman times to the present, in this modern museum opposite the castle.
Nymans, Handcross
A romantic house and garden set in a scenic woodland estate, Nymans is a blend of Gothic ruins and 20th-century design. Enjoy free entry on the 19 and 20 September.
Shoreham Fort, Shoreham-by-Sea
Built in the 1850s to defend the Sussex coast, Shoreham Fort will bring the historic monument to life with stories and demonstrations.
Leonardslee Lakes & Gardens, Horsham
Wander through 200 years of garden history, complete with tranquil lakes, sculptures, and even wallabies! Enjoy free entry on 12, 15 or 17 September 2025.
Check participating times, dates and find out more about West Sussex Heritage Open days here.
Whether you're a history buff, architecture lover, or just curious about Sussex, Heritage Open Days 2025 offer a unique way to connect with the past. Be sure to check individual listings for dates, times, and booking requirements.
For full listings and updates, visit the Heritage Open Days website.
