Psathoura is a Greek

Greece

Greece , officially the Hellenic Republic , and historically Hellas or the Republic of Greece in English, is a country in southeastern Europe....

 island in the Northern Sporades

Sporades

The Sporades are an archipelago along the east coast of Greece, northeast of the island of Euboea, in the Aegean Sea. It consists of 24 islands, of which four are permanently inhabited: Alonnisos, Skiathos, Skopelos and Skyros.-Administration:...

. It is administratively a part of Alonnisos and forms a depopulated sub-municipal district which is not officially a settlement. The Psathoura lighthouse, built in 1895, stands at 28.9 metres. It is one of the tallest in the Aegean. Its signal is a flash of one second every ten seconds.

Nearest islands and islets

Its nearest islands and islets are Pelagos to the southwest, Gioura

Gioura

Gioura is a Greek island and an abandoned settlement in the eastern part of the Sporades. It is administratively part of the municipality of Alonnisos. The island name dates back to the ancient times as Gerontia. The name was later altered to Gioura. The island also features a Neolithic settlement...

 to the south and Piperi

Piperi, Greece

Piperi is a Greek island in the Sporades. It is administratively part of the municipality of Alonnisos and is also the Sporades' easternmost island. The 2001 census reported a population of two inhabitants.-Nearest islands and islets:...

to the southeast.