Aegna is an Estonian island in the Bay of Tallinn in the Baltic Sea. Administratively it is part of the city of Tallinn, the capital of Estonia and is a sub district of the Kesklinn district. Aegna island has an area of 3 km², and can be found off the Viimsi peninsula, around 1.5 km NW of Rohuneeme and 14 km north of Tallinn. It has a 10 km coastline whic…Aegna is an Estonian island in the Bay of Tallinn in the Baltic Sea. Administratively it is part of the city of Tallinn, the capital of Estonia and is a sub district of the Kesklinn district. Aegna island has an area of 3 km², and can be found off the Viimsi peninsula, around 1.5 km NW of Rohuneeme and 14 km north of Tallinn. It has a 10 km coastline which includes two sandy beaches. The island's highest point is about 13 m above sea level.