Eurotherme Bad Schallerbach, Thermal spa complex in Bad Schallerbach, Austria.

EurothermenResort Bad Schallerbach is a spa and hotel complex whose connected buildings have green and yellow facades and grey and glass roofs. An arched glass enclosure covers an indoor pool, and outdoor pools with umbrellas and loungers lie in front. To the right are flat-roofed blue and grey buildings around a parking lot and a children's water play area with small slides, with green hills behind.

The thermal springs were found by chance in 1918 during oil exploration, leading to the opening of the first bathhouse in 1922. This discovery transformed the area into a wellness destination.

The name Aquapulco nods to Acapulco, and the family section opened its pirate world on 1 July 2011 with nine slides, water cannons and a wave bay. The Tropicana, opened 1 October 2011, holds a coral grotto with a seawater aquarium and three health pools fed by sulfur, brine and iodine-selenium water. The sulfur spring itself was struck in 1918 at 461.3 m while drilling for oil.

The resort is split into separate zones: Aquapulco for families, Tropicana thermal pools, the AusZeit sauna village, the Physikarium therapy centre and the Atrium conference centre. The Tropicana's glass roof can be opened in fine weather. The Paradiso hotel stands in a 22-hectare park.

The Tropicana section features a retractable glass roof that opens and closes, allowing swimmers to experience outdoor bathing year-round. This system creates the unusual sensation of being both indoors and outdoors simultaneously.