Ærø measures roughly 20 km from northwest to southeast and varies in width from around 4 to 8 km.
There are three small towns on the island: the largest is Marstal with a population of 2,266. Fourteen villages and a number of farms complete the island's pattern of settlement.
The objective of the Green Ferry Vision is to perform a feasibility study for the design, production and operation of an innovative low weight ferry for cars and passengers - a ferry only powered by green electricity stored on batteries on board.
The ferry design will be well beyond state-of-the-art when it comes to charging powers and capable operating distance.
Ærø's three district heating systems of solar collectors have won international acclaim.In recent history, the preservation of the area's local heritage has been paramount among residents.This passion for Ærø was demonstrated in 2000, when the Marstal Maritime School was ordered to close.During this period — from the 14th century to the year 1864 – Ærø was united and separated, alternately, into a number of enclaves.Ærø was outside the tariff wall of the Kingdom, leading to flourishing smuggling which was a way of living for many of Ærø's inhabitants.
Dating 50 Ærø
In 1629 the main town of Ærøskøbing burnt down in a great fire.Until 1864, Ærø was part of the Danish Duchy of Schleswig – the area of Schleswig/Southern Jutland is now divided between Denmark (Northern Schleswig) and Germany (Southern Schleswig).Gråsten Manor House was abolished in 1766 and the buildings were demolished. This is marked by the memorial stone at Olde Mølle (English = Ancient mill).At the union, the old Code of Jutland from 1241 was applied and even today some of those rules are still valid.The island's beaches also attract anglers and artists.