Zelená žaba

Zelená žaba (Green Frog) is an open-air bath on the wooded southern slope of the Teplická vrchovina above the spa town of Trenčianske Teplice in western Slovakia. It was designed in the 1930s by the Brno architect Bohuslav Fuchs, whose wider urban scheme for the town aimed to extend the spa into new sunny positions on the terrace of the southern slope; only this bath was built from that scheme. The design dates to 1935–1937 and construction to between 11 May 1936 and 10 July 1937. The complex is a seasonal thermal open-air bath; the architect himself counted it among his two favourite works. The original layout comprised a four-storey main building for catering and services with a curving two-storey wing of changing cabins, an open swimming pool of 33.3 by 12 m, a separate bowling building (demolished before 1975) and a circular children's pool with its own showers and playgrounds. The bath is a listed monument and the building's quality of execution is such that in over seventy years it required only minimal intervention. Closed in 2001, it was restored between October 2014 and July 2015 and reopened in August 2015.

Today the operator lists a main 33-metre stainless-steel pool with wellness and amusement features — a water geyser, massage benches, a wild river and a wave section — a children's pool, a VIP zone with its own pool and whirlpool, sun terraces with loungers, a multi-purpose sports ground, tennis courts, a playground, a bowling alley, a restaurant with terrace and several buffets. Published water temperatures are 28 °C in the large pool, 34 °C in the whirlpools and 32 °C in the children's pool.

A separate sauna world, described by the operator as unique in central Europe in its design, is built as a group of seven tubes oriented towards a large central whirlpool. It holds a Finnish sauna, a herbal sauna, a steam sauna and an infrared sauna, together with a whirlpool, a cooling pool, rest rooms and changing rooms.

The grounds are open all year, but the seasons differ sharply: in the winter season the operator states that visitors can use the restaurant and the outdoor sauna world, the open-air pools being a summer offer. Tickets can be reserved online, and entry to the grounds is limited to bath visitors. The operator does not describe the water as thermal or mineral; the thermal designation comes from the town's spa tradition.