AquaFonte lists 8 verified thermal springs in Croatia, each with its own page: temperature, minerals, treatments, and directions.
Water types found
Springs
Aquae Vivae (Krapinske Toplice)
Krapina-Zagorje County · 41°C
A thermal water park in the Zagorje hills built on a hyperthermal spring known since Roman times, drawing calcium-rich, neutral-pH water from over 1,200 metres underground.
Daruvarske Toplice
Bjelovar-Bilogora County · 46.7°C
A Slavonian spa town whose name literally means 'very strong springs' in its Roman form, Aquae Balissae, drawing warm mineral water from Triassic limestone and dolomite that has been used for over two millennia.
Istarske Toplice
Istria County · 34°C
A sulphurous, mildly radioactive thermal spring in the Mirna river canyon of central Istria, its bathing tradition marked by the ruins of a medieval church once known as Terme Santo Stefano.
Lječilište Topusko
Sisak-Moslavina County · 68°C
A volcanic-origin thermal spa in central Croatia whose deep springs, ranked among Europe's finest by water quality, have drawn bathers since medieval times.
Terme Jezerčica
Krapina-Zagorje County · 38°C
A natural thermal spring at 38°C in the wooded hills near Donja Stubica, at the foot of Zagorje's Medvednica-side countryside, feeding a hotel and aqua park about 40 km from Zagreb.
Terme Sveti Martin
Međimurje County · 38°C
A thermomineral spring accidentally struck by oil prospectors in 1911 in the Vučkovec hamlet of Međimurje, now the heart of a resort that helped the municipality win the European Destinations of Excellence award.
Terme Tuhelj
Krapina-Zagorje County · 33°C
A hypothermal sulphur spring in the Zagorje hills of northern Croatia, rich in calcium and magnesium bicarbonates plus sodium, potassium and strontium, paired with a medicinal peloid mud.
Varaždinske Toplice (Aquae Iasae)
Varaždin County · 58°C
One of Europe's oldest continuously used spa waters, a calcium-sodium sulphurous spring at 58°C that fed the Roman health centre of Aquae Iasae and today supplies a public rehabilitation hospital, including the historic Hotel Minerva.