The initiative is a simple but powerful concept: hundreds of great buildings of all types and periods opened up their doors to all, completely for FREE. It is a truly city-wide celebration of the buildings, places and neighbourhoods where we live, work and play, and a quarter of a million people take the opportunity to get out and get under the skin of London's amazing architecture.
Visit the Open House London microsite to find out more about the capital’s greatest architectural showcase and read the report of the 2015 event
Read about all our pioneering programmes designed for people to learn about and advocate for the value of good design through first-hand experience
Regular polls, surveys and research into Londoners' attitudes towards design quality and built environment issues
Find out how Open-City provides independent advice and support to communities