Vienna is often listed among the world’s most livable cities — and rightfully so: The Austrian capital has excellent public housing, green spaces galore and a vibrant cultural scene.

But as a Vienna expat, my favorite of the city’s amenities are its numerous outdoor pools. Many of these roughly century-old institutions are much more than mere lap-swimming facilities; many locals use them as seasonal refuges for sunbathing, reading in the shade beneath towering lindens, or drinking a radler (a lemony drink made with beer and soda) at an on-site cafe.

The outdoor season for the pools typically runs from early May to mid-September. Daily entry for adults costs around 8 euros; less for seniors and children. Here are six options to consider.

Steps away from the Sandleitenhof, a vast municipal housing project, stands another Red Vienna landmark: the Kongressbad. When it opened in 1928, it was a state-of-the-art oasis, featuring a 100-meter pool and 10-meter diving platform. A hot spot for fitness enthusiasts, the Kongressbad was the site of Austrian Olympic swimming trials for the 1928 Games in Amsterdam.