|Euskadi / País Vasco||Basque Country|
|Gipuzkoa / Guipúzcoa|
Zestoa (official name in Basque) (Cestona in Spanish) is situated at an elavation of 252 m on the Urola river at the foot of the Izarraitz massif in the Basque Country. The municipality has a population of about 3,700 (2017).
Of great thermal tradition, it is well known for its springs' curative properties. Open since 1804, its spa allows
enjoying its waters discovered at the end of the 18th century. The mineral waters were declared of public interest
in 1792; the spa was founded in 1804. In the Belle Époque, Zestoa attracted the European aristocracy giving way
to the creation of a hotel, the emblematic building of the spa. Nowadays Zestoa's