• Book a start time online, since every ticket has a timed entry and slots can sell out; plan about 2 hours inside
• Best from age 6 up, though a children's zone with multimedia games and cinema rooms keeps younger kids busy
• Parking is for groups only and visitors with disabilities; on weekends use the open lot between Oławski Bridge and Polinka, or come by tram

Hydropolis is an interactive museum about water, run by the city water company inside the historic Na Grobli waterworks. Kids walk past a tiger shark model with a shoal of 1,500 tuna, a full-size replica of the Trieste bathyscaphe, deep-sea creature models and a 3.5-meter water vortex.

There are more than 70 interactive installations, cinema rooms, and a children's zone with multimedia games about dolphins and coral reefs.