If you don't have time to trek to the Blue Lagoon, Sky Lagoon may be a suitable alternative. Opened in 2021, the Sky Lagoon's infinity-edge gives the illusion of swimming amongst the sea and sky.

Even though Sky Lagoon looks close on the map, walking was not an option. Instead, my hotel called me a taxi, and the drive took about 15 minutes. The one downfall was that taxis in Iceland are ...