What's a Top 10 cool pool list without a lido? Admittedly, it's a little difficult finding a stylish one of the kind, but Plymouth's Tinside Lido proves that they do exist. It's a renovated 1935 Art Deco Lido with a Grade II Listed Building status and right by the sea. When it opened in 1935 it was hailed as "one of the finest open-sea bathing centres in the country" and was often used for beauty competitions.

Tinside Lido, Plymouth, 01752 261915, www.plymouth.gov.uk/leisureandtourism