Thermes de Hisarya

Thermes de Hisarya in Plovdiv Province, Bulgaria, draws bicarbonate and siliceous mineral spring waters from one of the Balkans' most historically layered spa towns, where the extraordinarily well-preserved Roman fortification walls (dating from the second and third centuries CE, constructed during the reign of the emperors when Hisarya—ancient Diocletianopolis—was one of the most important spa towns of the Thracian province) surround the modern thermal facilities with ancient stone that speaks to eighteen centuries of continuous thermal spring use. The Romans recognized the exceptional quality of Hisarya's 22 mineral springs and built an extensive thermae complex within the fortified town, whose waters have long been associated with relaxation and well-being—a thermal tradition that Bulgaria has continued and modernized in the contemporary spa and balneotherapy facilities that now operate within the ancient walls. The archaeological landscape of Hisarya, combining Roman fortifications, a functioning spa tradition, and proximity to Plovdiv (one of Europe's oldest continuously inhabited cities), creates a thermal destination of exceptional historical depth.