In the middle of the 19th century there was an increased need for fossil fuels. This need was created by the industrial revolution in the Western countries and resulted in the opening of mines in most Aegean islands. The iron mines of Kythnos operated from 1873 to 1940. The mines are currently inactive, but the remains of the mining activity (administrative buildings, social housing, loading stairs, arcades and equipment) can still be seen everywhere on the island.

This is a big beach with crystal clear waters on the southeast coast of the island.

This is the beautiful beach of the homonymous village. Here you can enjoy the beneficial properties of the hot springs that end up in the water of the sea.