Aegina is located in the center of the Saronic Gulf, surrounded by Agistri, Methana, Troizina, Poros and the coast of mainland Attica. With a total area of ​​82.63 square kilometers, it is the second largest island of Argosaronicos. Its coastline is 57 km long and has the shape of an almost equilateral triangle. Its NE end is 10.5 nautical miles from the mouth of the port of Piraeus, the NW is 12 nautical miles from Trachili of Epidaurus and its S end is 9 nautical miles from the northern entrance of Poros.
Its terrain is mainly volcanic, with the northern areas consisting of sedimentary rocks and the southern areas of igneous rocks. It consists of low hills and some plains. The highest mountain of the island is Mount Oros with a height of 532 meters, while it has no rivers and generally no running water. The fauna of the island consists of voles, hares, wild rabbits and foxes, while the flora consists of wild olives, holly trees, phrygana, ramnus and filikia. The climate is Mediterranean and dry with limited rainfall.
Sights..
The island presents important attractions such as the Temple of Aphaia, Palaiochora (the "island" Mystras), the remains of the Temple of Hellanius Zeus, the prehistoric/historic settlement of Kolona, ​​the Tower of Markellos, the Metropolis, the Beautiful Church, the Kapralos Museum, the Folklore Museum and the Archaeological Museum. In the courtyard of the archaeological museum is also the mosaic of the ancient synagogue of Aegina which dates from the 4th century AD. until the 7th century AD[30] The mosaic belongs to a rectangular synagogue with an arch on its eastern side and is decorated with geometric patterns.
Well-known beaches of the island are Marathonas, Agia Marina, Perdika and Souvala. A popular tourist center is also the imposing monastery of Agios Nektarios together with the oversized holy temple, as well as a multitude of churches that were saved after the Turkish occupation.
At the southern end of the island, 9 km from the port of Aegina, is the tourist resort of Perdika, from where in summer there is a frequent daily connection (by boat) with the islet of Moni.