Paradiso sul mare, Art Nouveau palace at Anzio seaside, Italy

Paradiso sul mare is a five-story Art Nouveau palace with a central dome and two towers positioned along Anzio's waterfront promenade. The structure displays characteristic early 20th-century architectural details and dominates the coastal landscape through its proportions and decorative elements.

Cesare Bazzani designed the building in 1919 for Giuseppe Polli, an entrepreneur and mayor of Anzio, and it opened in 1924 as the Kursaal Polli, intended for fashion shows, congresses, exhibitions and a gaming house. During the Second World War it housed the Allied command after the January 1944 landing. From 1968 the province of Rome managed it, partly as a boarding school for the state hotel institute.

The palace entered film history as the "Grand Hotel of Rimini" in Federico Fellini's Amarcord, and it appears on John Alcorn's original poster for the film. It also served as the set for the Sanremo Jazz Festival in Anthony Minghella's The Talented Mr. Ripley and appeared in Alberto Sordi's 1973 Polvere di stelle.

The building is closed and unused since 2016, when management returned to the municipality of Anzio; its halls are not open to visitors. A portion once served as a storage depot for the Museo Civico Archeologico. The structure is visible from the lungomare Zanardelli and the beach, but access inside is not possible.

Although initially designed to operate as Anzio's casino, the gambling establishment never materialized and the building was repurposed instead. This unexpected turn transformed a potential pleasure venue into a cultural space that now attracts artists and filmmakers.