Therernare three open-air swimming pools in Madrid, one Olympic-sized, one for children andrnone intermediate. Piscinas Casa de Campo gets very crowded at weekends but are fairlyrnquiet during the week. At certain times they arernclosed off for OAPs or particular activities, so it’s best to callrnbeforehand to make sure they are open. Facilities at Piscinas Casa de Campo also includernchanging rooms, cafés and sunbathing areas. Topless sunbathing isrnallowed, and there is an informal gay area.