Our top pick for a Reykjavík city-centre swim. Sundhöllin reopened in 2017 after a year-long revamp that added an entire outdoor area with hot tubs, sauna and a swimming pool. The original indoor pool remains open, as well as the secret upstairs hot tub with excellent city views.

The Sundhöll was built in 1937 and is far older than other Reykjavík pools. Male locker rooms are original while women now dress in the new extension. Over summer, we recommend the outdoor locker rooms — ask staff for directions.