Agistri is the smallest island of Argosaronic and the largest of the cluster of small islands between Aegina and Epidauria in the Peloponnese.
It has an area of 11.97 square kilometers. The length of the island is 5.5 km. and its width of 3.5 km. It is 22 nautical miles from Piraeus and 3.5 nautical miles from Aegina. The highest point of the island has an altitude of 249 m. and is located in Kontari.
The distances between the villages of Agistri are short. For example, Megalochori is 2.5 km from Skala and from Limenaria 6.5 km.
The perimeter of the island consists of many small bays and windy coves with clear blue waters, in most of which the pine trees reach to the sea.
It consists of low green hills, which are covered by pine forests. It is the third island in Greece in proportion of green (80%).
The fields that exist in Agistri are adorned with wild flowers and are usually sown with cereals, which include figs, olives and almonds.
Traditionally, the main products produced by the island are pine resin, olive oil, cereals, cotton, fruit and vegetables, fruits, figs, almonds and barley. Thyme, oregano and sage and other aromatic herbs also thrive on the island in considerable quantities.
The climate of the island is dry and healthy, sweet in winter and cool in summer.