Brynmawr Lido, Wales

In the summer of 1931, a team of volunteers set out to build an open-air pool on an old rubbish tip in Brynmawr.

It was perhaps one of the best examples of communal working, and was the first project of it’s kind in the UK.

It was constructed in two waves by a team of workers drawn from the local unemployed, 37 international volunteers from Belgium, Bulgaria, France, Germany, Norway, Switzerland, Czechoslovakia, and the United States, and 48 student volunteers from across Britain.

Cement to complete the pool was purchased with money donated by the people of Lagarde, France.

It opened in 1932, but by the late 1980s, it had been demolished.