This transnational serial property comprises eleven spa towns, located in seven European countries: Baden bei Wien (Austria); Spa (Belgium); Františkovy Lázně; Karlovy Vary; Mariánské Lázně (Czechia); Vichy (France); Bad Ems; Baden-Baden; Bad Kissingen (Germany); Montecatini Terme (Italy); and City of Bath (United Kingdom). All of these towns developed around natural mineral water springs.