Open House London

Free on the on Saturday and Sunday 21st and 22nd of September?

Here is something that might fill up your weekend. Would you not like to enter one of these big offices buildings, mansions, industrial installations or whatever floats your boat? 
The annual Open House London will take place the mentioned weekend. Many of usually restricted places will open their doors to the public. You can check the list of buildings which you can access and the way to do it (you have to pre-book in some cases and bring your photo ID in some other – like 10 Downing Street! ) on the website below.

Do not forget to plan the route as the sites might not be close to each other.