Thermal Baths — Budapest

Budapest's most opulent Art Nouveau bathing palace, closed for a multi-year structural renovation until 2028 but still striking from the outside.

A 16th-century Ottoman Turkish bath with an octagonal domed pool hall lit by star-shaped skylights, plus a rooftop panoramic pool over the Danube.

Europe's largest thermal bathing complex, an opulent neo-baroque palace of outdoor and indoor pools fed by hot springs at the edge of City Park.