For anyone who loves this city, the annual Open House weekend is like Christmas come early. Hundreds of buildings, normally off-limits, open their doors for anyone who's curious. This year's event, on 20-21 September, features over 800 buildings — from skyscrapers to toilets — across most London boroughs. Dozens of architectural walks and talks are also planned.
The gallery below shows just a few of the many highlights — please check the official programme for opening times and other restrictions.