4, rue Louis Armand
Paris
75015
Mon-Fri 9:00-21:00; Sat-Sun 8:00-21:00
Aquaboulevard is a wildly popular public water park with slides and a wave pool. Plan ahead though – it gets ridiculously crowded on Wednesdays and weekends, and swim trunks are not permitted (men and boys must wear close-fitting Speedo-type suits)