The Villa Aldobrandini is a villa in Frascati, Italy, property of the Aldobrandini family. Also known as Belvedere for its charming location overlooking the whole valley up to Rome, it was rebuilt on the order of Cardinal Pietro Aldobrandini, Pope Clement VIII's nephew over a pre-existing edifice built by the Vatican prelate Alessandro Rufini in 1550.
The villa, aligned with the cathedral down its axial avenue that is continued through the town as Viale Catone, was rebuilt in the current form by Giacomo della Porta from 1598 to 1602, and then completed by Carlo Maderno and Giovanni Fontana. Particularly famous is the Teatro delle Acqua ("Water Theater"), by Carlo Maderno and Orazio Olivieri. Other noted villas with giochi d'acqua are the Villa d'Este in Tivoli and Villa Torlonia also in Frascati.
The villa has an imposing 17th -century facade and some other interesting architectural and environmental features, such as the double gallery order on the rear facade, the spiral-shaped flights, the large exedra of the Water Theatre and the magnificent park.
Inside there are paintings of Mannerist and Baroque artists like the Zuccari brothers, Cavalier D'Arpino and Domenichino. Outside there is a monumental gate by Carlo Francesco Bizzacheri (early 18th century).