Open House is an annual London festival of architecture, is back in London in 2018, taking place 22nd and 23rd of September. The Open House festival is dedicated to making architecture accessible to all. It allows everyone access to unusual private homes, government building, historic sites, new skyscrapers, educational establishments and many others that are normally closed to the public.
This year more than 800 London venues will open their doors all over London - and what is brilliant is it's a free event, although some popular places require pre-booking, for the rest you can just turn up on the day!