Aquapiper, Water park in Guidonia Montecelio, Italy.

Aquapiper is a water park in Guidonia Montecelio featuring multiple water slides, wave pools, and landscaped green spaces for relaxation. The facility includes restaurants, shops, game rooms, and picnic areas to meet various visitor needs.

Construction began in the late 1980s and Aquapiper opened in summer 1990. It closed at the end of the 2014 summer season, and in June 2015 the owner Sibor s.r.l. was declared bankrupt. The facility was auctioned until 2018, when a new owner bought it; no reopening followed.

The park appears in Carlo Verdone's 1995 film 'Viaggi di nozze'. Two more films were shot there in 2019: 'Guida romantica a posti perduti' by Giorgia Farina and 'Il materiale emotivo' by Sergio Castellitto, both made after the 2014 closure.

Aquapiper has been closed since the end of the 2014 summer season, and the owning company Sibor s.r.l. was declared bankrupt in June 2015, so the pools and slides cannot be visited. The site covers 130,000 square metres, 25,000 of them green, in the comune of Guidonia Montecelio. It was put up for auction until a new owner bought the structure in 2018.

The wave pool was billed as the largest in Europe, animated by ocean-like waves and a waterfall bearing the "Aquapiper" sign. In the water stands a grey stone elephant sculpture that sprays water, with a smaller elephant figure beside it. The park also had a 50 m by 25 m Olympic pool and a hydromassage lagoon.