The Casino cultural and congress centre was built in 1899–1901 in the Italian Renaissance style. The spa hotels in Mariánské Lázně meet all requirements for organising conferences, professional meetings or cultural events. The Casino in neo‑Renaissance style has 6 halls for events, conference rooms and one additional hotel conference room, offering a capacity for 1,080 people. All spaces are equipped with air conditioning, natural light, free Wi‑Fi and modern technical facilities.
The Marble Hall is intended for conferences up to 450 people, receptions up to 300 people and banquets up to 250 people. It is 376 m² in size. The Mirror Hall is suitable for conferences and banquets up to 160 people and receptions up to 250 people. Its size is 300 m². The Red Hall is intended for receptions up to 180 people and for conferences and banquets up to 130 people on an area of 190 m². The magnificent Eduard Library is designed for conferences up to 50 people. The Red Salon has an area of 81 m². Two casino galleries have a total capacity of up to 140 people for banquets and up to 190 people for receptions.