Wembley Arena (Empire Pool), Empire Way, Wembley, Greater London
Now known as Wembley Arena this building was built in 1933-4 as the Empire Pool. It was built by Sir Owen Williams. It has a reinforced concrete frame of three hinged arches spanning 240 feet. This was the largest concrete span in the world at that time. The pool was 200 feet long and 60 feet wide with a deck for ice skating. The end of the building opens and used to lead to sun-bathing terraces and lawns. The pool was used for the 1948 Olympic Games.