Balneological Department in Sopot - located on the premises of the Provincial Rheumatological Complex. Dr. Jadwiga Titz-Kosko in Sopot (ul. Grunwaldzka 1/3), in front of the entrance to the pier. The building was entered into the register of monuments in 1982. The Balneological Institute was established in 1903 (as it says on the board in front of the entrance to the building), and its construction cost amounted to PLN 460,000. brands. The facility was designed by Paul Puchmüller and Heinrich Dunkel. It was built on the area previously occupied by Jerzy Haffner's bathing establishment. There is a plaque on its wall commemorating the founder of the swimming pool. The building is decorated with sculptures and stained glass windows. Above the main portal there are: a sculpture of a mermaid and a triton and the city's coat of arms (one of the oldest in Sopot). The windows of the treatment room have Art Nouveau stained glass windows by Ferdinand Müller from Quedlinburg. The chimney located in the north-eastern corner of the building was enclosed with a tower. At its top there is a glass viewing gallery that also serves as a lighthouse. Reinforced concrete spiral stairs run around the perimeter of the chimney. The facility includes the Provincial Rheumatology Complex. Dr. Jadwiga Titz-Kosko, where you can use, among others, from brine baths, cryotherapy, kinesitherapy, balneotherapy, hydrotherapy, inhalation and rehabilitation treatments of the musculoskeletal organs. Opposite the plant there is a fountain to which water is pumped from the Saint's spring. Wojciech. It is medicinal water (brine) 4.5% bromide, iodine. In November 2007, design documentation was prepared, according to which actions are to be taken to reconstruct the lantern crowning the tower until the 1960s. Before renovation works were undertaken, the lighthouse was located at approximately 32.5 m above sea level. It is made of ceramic bricks and perforated bricks with lime mortar. At the top of the walls there are wooden walls (approx. 16x16 cm). The wooden roof truss is based on a cross beam ceiling. The structure is covered with green, galvanized sheet metal.