I was looking at Youtube for art fairs and museum shows when I came across a piece produced by Vernissage. On Youtube, there is this video of the artist Leandro Erlich work. The work, installed at PS1 in NYC is a pool that has a glass ceiling so people can walk under the pool as if one was on the bottom of the pool. Erlich is a master at reimaging space. This work in particular seem to inspire people to want to make swimming motions. Check out his web page.