Absolutely beautiful show on BBC Iplayer at the moment: Alice Roberts swims in empty lochs, freezing rivers and underground lagoons, interspaced with water-based poetry in this beautiful one-off show. As a huge fan of river swimming I am mega jealous.
If you feel like having a go yourself, Daniel Start’s lovely book, Wild Swimming, lists the most beautiful spots in the UK. My favourite? Claveterton Weir, near Bath.