Free entry to London’s best buildings, 16—17th September 2017.

Now in its silver anniversary year, Open House London is a city-wide celebration of the buildings, places, and neighbourhoods where we live, work and play.

The initiative is a simple but powerful concept: for one weekend in September hundreds of great buildings of all types and periods open their doors to all, completely for free. Each year a quarter of a million people take the opportunity to get out and get under the skin of London's amazing architecture.