Kythnos is in the western Cyclades located between Serifos and Kea. The island is also known by its residents as Thermia with its roots in the 12th century. This name relates to the natural hot springs that are in the area of Agia Irini and Loutra. 
 
Most visitors come to the island for its splendid sandy beaches as Apokrousi, Skylou, Gaidouromantra, Kolona, Episkopi, Lefkes  and the isolated beaches of Agios Stefanos ,Simousi and Martinakia.

The capital of Kythnos island is Chora. It has stunning, whitewashed houses, cobbled alleys, wonderful archways and windmills.

Dryopida is another beautiful village of Kythnos. It is a typical Cycladic settlement with paved,  Merichas is also a popular resort of the island, mostly prefered by the young people and families. This is where most of the island's restaurants, taverns, super markets, cafes  and clubs are situated.

Kythnos, as all the Cycladic islands, has many churches and small chapels scattered along the countryside and its coasts.

The most known churches are the churches of Panagia Kanala, Panagia Nikous, Agia Anna, and the chapel of Profitis Ilias.