What Wikipedia says

Kythira (or Kythera) is an island in Greece lying opposite the south-eastern tip of the Peloponnese peninsula. Today its population hovers around 3,354 people (2001 census). From ancient times until the mid 19th century, Kythira was a crossroads of merchants, sailors, and conquerors. As such, it has had a long and varied history and has been influenced by many civilisations and cultures. This is reflected in its architecture (a blend of traditional, Aegean and Venetian elements), as well as the traditions and customs, influenced by centuries of coexistence of the Greek, Venetian, and Ottoman cultures.

The chief town of the island, Kythira (or Chora, "village") has the Historical Archives of Kythira, the second largest in the Ionian islands, after Corfu. The rugged terrain is a result of prevailing winds from the surrounding seas which have shaped its shores into steep rocky cliffs with deep bays. The island has many beaches, of various composition and size; only half of them can be reached by road through the mountainous terrain of the island. The Kythirian Straits are nearby.

Since the late 20th century, the Kythirean economy has largely focused on tourism, which provides the majority of the island's income. The popular season usually begins with the Greek holiday of Pentecost at the end of May, and lasts until the middle of September. During this time, primarily during August, the island's population will often triple due to the tourists and natives returning for vacation. Minor sources of revenue are thyme honey, famous within Greece for its rich flavor, as well as some small-scale cultivation of vegetables and fruit and animal husbandry that is, nevertheless, increasingly restricted to local consumption.