In Copenhagen – the capital city of Denmark – one of the trendiest spots is the public outdoor swimming facility in the Islands Brygge area where Copenhageners come to relax during the summer. Practically all Danes know how to swim, and swimming lessons are part of the compulsory curriculum in all state schools.

Source: http://denmark.dk/en/green-living/copenhagen/swimming-in-copenhagen-harbour, https://www.factretriever.com/denmark-facts