1. Marina Bay Sands in Singapore.
57 floors up, this 500 foot long pool is not for the faint of heart. (Photo by williamcho)
2. Hotel Joule in Dallas.
Part of the pool juts out from the building with only a thick pane of glass between swimmers and the city ten floors below. (Photo by the urban fabric)
3. Thompson Toronto Hotel Pool.
Opened in June 2010, the heated infinity pool is on the 16th floor and overlooks downtown Toronto. (Photo by Thompson Hotels)
4. Harbour Plaza Hotel in Hong Kong.
Glass-walled pool with views of downtown Hong Kong and the distant hills. (Photo by PVCG)
5. Old Sydney Holiday Inn.
Could there be better views of Sydney? It seems unlikely as this pool gives views of the city spanning from the Harbour Bridge to the Opera House. (Photo by Starr Public Relations.)
6. Colonnade Boston Hotel.
The only rooftop pool in Boston, this pool is 11 stories up and non-hotel guests are welcome during the week. (Photo by colonnade)
7. Grand Hotel Central in Barcelona.
The infinity pool gives great views of Barcelona’s famous Gothic District. (Photo by Grand Hotel Barcelona)