This gallery gives a hint of the huge range of buildings that were open to the public last weekend. There are hundreds of photos in our Flickrpool from a fabulous weekend of architectural exploration and view taking.
Many thanks to Martin Turner, Richard Parmiter, IanVisits, WPhoto, yorkshirestacked, HoosierSands, CDL Creative, daveograve@, Andrew :), curry15 and Liam Davies who all shared their photos in the Londonist Flickrpool.