Celebrate London's architectural wonders as Open House London throws open the doors to hundreds of buildings and spaces in and around the capital.
More than 800 free guided tours, architectural-themed walks, cycle rides, debates and activities are available during the weekend. Explore iconic buildings that are not usually open to the public, find out interesting details about more familiar spaces, and step into the private homes of the rich and famous.
Open House London Attractions
Previous years have seen popular attractions open to the public, such as 10 Downing Street, The London Eye, City Hall (the offices for the Mayor of London), Mansion House and City financial hub the Bank of England.
Look back nearer the time for the full list of buildings and tours during Open House London 2015.