Park Jezerka, Urban park in Nusle, Czech Republic

Park Jezerka is a 3.5-hectare valley park in Nusle, Prague 4, laid out from 1949 to plans by architect Jiří Novotný and engineer Jaroslav Schollar. A central path links Pankrác with Nusle and Michle; steep southern slopes are held by low stone retaining walls. The grounds hold two children's play areas, a dried pond fed by a hidden spring, and the Na Jezerce theatre building.

The Jezerka spring is recorded in Cosmas's chronicle as a source of pure water once piped in wood to Vyšehrad. In 1361 the Vyšehrad chapter walled it in and replaced the wooden pipes with stone ones. The park itself was laid out from 1949 to plans by architect Jiří Novotný and engineer Jaroslav Schollar on the site of the medieval Šustrová vineyard and the later Šustrovka estate.

The Na Jezerce theater operates within the park and hosts regular performances for the local audience. It serves as a gathering point and stage for the surrounding community's cultural life.

The main path runs through the whole valley, linking Pankrác with Nusle and Michle. The southern slope is steep and reached by abrupt approaches, while the valley paths are gentle; stone retaining walls reinforce several of the steep sections. Two playgrounds lie in the park, one with climbing frames for ages 2 to 12 and a traffic playground.

The spring that once fed Libuše's bath was reportedly located in the upper part of the park, where the children's playground now stands, and it was buried during house construction in the 1920s. The water now hidden beneath the paved areas still supplies the pond below the Divadlo na Jezerce building.