London Open House Festival opens its 2025 ballot at midday today, giving Londoners and visitors the chance to explore some of the city’s most remarkable, protected, and unique spaces and buildings

These London landmarks, alongside the over 700 buildings, spaces, and experiences in the broader London Open House Festival programme, will open their doors to successful entrants between 13-21 September 2025.

London Open House Festival stands for accessibility and inclusivity, and everyone can register for a visitor account on the Open House Festival website. Once registered, you can browse the programme, book tickets for ticketed events and tours, and register for access to buildings by public ballot, which often experience higher demand. The ballot system presents a free and fair way to allocate tickets to some of the most high-profile buildings in the London Open House Festival programme. The ballots are drawn randomly, and successful applicants are notified by email.

Confirmed highlights include:

10 Downing Street – 10 Downing Street, a symbol of British political power and heritage, is an iconic Georgian landmark. Its black door and neoclassical facade embody centuries of cultural, architectural, and national identity.
BT Tower, Fitzrovia – A defining presence on London’s skyline for over 50 years, the Grade II-listed BT Tower invites the public to its iconic revolving floor, 158m high, once home to a futuristic restaurant, Top of the Tower.
BBC Broadcasting House – The Art Deco-style BBC Broadcasting House is a cultural landmark and the first-ever purpose-built broadcast centre in the UK. Its Eric Gill sculpture of Shakespeare’s characters, Ariel and Prospero, makes it an international symbol of London’s creative spirit and global voice.
London Museum – The new Stanton Williams-designed London Museum at West Smithfield blends contemporary design with historic market architecture. It celebrates London’s diverse cultural heritage, connecting past and present in a civic space.
Canada House – Canada House is a Grade II*listed neoclassical landmark on Trafalgar Square, designed in the 1820s by Sir Robert Smirke. Its grand columns and dignified form represent Canada’s cultural presence and enduring ties to the UK.
Temple to Bank walking tour with Jack Chesher in partnership with Airbnb Experiences – Join bestselling author, guide and Open City Golden Key Academy alumnus, Jack Chesher, for an intimate walking tour exploring Aldwych to Bank. Starting inside the William Waldorf Astor-designed Two Temple Place, this unforgettable experience will see a small group of ballot winners hear the unique perspectives of a social media personality, culminating with drinks over the London skyline at a stunning architecturally-acclaimed rooftop location.

All public ballots will close on Monday 18 August. Successful entries to the ballot will be notified on this date. The full festival programme and general bookings will go live on Wednesday 20 August.

View the 2025 Open House Festival programme preview