Dean NicholasPictures From Open House WeekendLondon's Roman amphitheatre, by steve_wInside Churchill's (not so) secret Neasden bunker, by daveograveChannel 4 building by thegirlrgView from organ balcony, St Joseph's Church, Highgate, by DeanN View from the top of City Hall, by whimsicaleyeDesk of the Argentine ambassador, by M@Lloyds of London trading floor, by theboybgMark Mason's dining room, St James, by M@Russian newspaper with eerily familiar logo, Pushkin House, by M@Font reflection, United Reform Church, by M@Middle Temple library, by steve_wStaircase in Limehouse Accumulator Tower, by DeanN Whittington Estate, Highgate, by DeanN
Despite the impressive number of events grasping for your attention across the capital this weekend, Open House once again proved a huge success, as the snaking queues and exasperated snoopers at some of the more popular attractions testified.
Contributors to the Londonist Flickrpool roamed widely across the boroughs, poking through the city's cubbyholes and poring into normally clandestine parlours, and exploring London's long history in the process, taking in everything from Roman architecture to the latest City skyscraper.
Main image: View from the 17th floor of the Broadgate Tower, by megapiksel.