This spring, locally known as Topla Apa, is situated in Varna Province on Bulgaria's Black Sea coast. The thermal water flows at around 38°C, with an indoor bath and an open-air outdoor pool.
Insider tip — Topla Apa near Varna taps into the geothermal aquifer underlying the Black Sea coastal plain, where warm artesian waters emerge in several villages north of the city. The waters are low-mineral thermal waters favored for relaxation and rejuvenation. The Black Sea proximity means many visitors combine coastal tourism with inland thermal bathing. Local guesthouses in the area increasingly offer thermal bath packages to supplement the summer beach season.