The Színpart is one of the most modern and largest open-air performance venues at Lake Balaton, with a seating capacity of 1576. Located in the beautiful surroundings of Jókai Park, the open-air stage hosts a variety of theatrical performances, operettas, classical and popular music concerts, and dance theater shows during the summer season.
The construction of the Siófok Open-air Stage began in 1949 in the former Dimitrov Park, as there was already a high demand for outdoor performances. The stage was designed by Mátyás Varga, a recipient of the Kossuth Prize, and it was built with a relatively low budget. It was warmly welcomed by everyone, including Kálmán Imre himself, who became the namesake of the venue. He was invited to conduct his highly successful operetta "Csárdáskirálynő" (The Gypsy Princess) at the first open-air stage in his hometown and by Lake Balaton, but unfortunately, due to political and Cold War-related reasons, the composer could not fulfill this request. Sadly, a few years later, in 1953, Kálmán Imre passed away in Paris.
Throughout its operation, the stage has undergone several renovations, with one significant period being the 1970s. It became so popular that the Hungarian Television broadcasted the Táncdalfesztivál (Song Festival) from here, and it also served as the starting point for the popular TV show "Halló itt Balaton," where famous performers such as Koós János, Kovács Kati, Korda György, and Hofi Géza began their careers.
In the 1980s, the Interpop Festival further promoted the stage, featuring many future renowned singers and bands, including Zoltán Erika, Zámbó Jimmy, Napoleon Bulvard, Z’ZI Labor, and Pa-dö-dö.
In 2010, the stage underwent modernization, including an enlarged and covered stage area, new dressing rooms, and sanitary facilities. Special areas are also provided for visitors with mobility impairments, both in the seating area and restrooms.
The current state of the stage meets the expectations of the present time and is perfectly suitable for hosting domestic and international productions.