Crystal Palace National Recreation Centre. Sports complex featuring an athletics stadium, swimming pools, squash courts and an outdoor music venue.

Charles Holden’s mini masterpiece, a marriage of Scandinavian modernism and British Arts and Crafts.

Lady Bankes School, Ruislip. The best work of the pioneering Middlesex County Council architect department, using Dutch-inspired modernist design.

For more than 800 years, in frosty weather the frozen Thames played host to spectacular festivals.