Ærøskøbing Church at the market square is the third church on that location and on the square are the two old town pumps that supplied the town with water right up until 1952.
The Prior's house from 1690 is one of the town's oldest dated buildings. It was purchased and restored in 1917 by Alexis Prior.
The old harbour has been enlarged by a new marina and the beach at Vesterstrand with its colourful little beach huts is only a few minutes' walk from the town and the harbour.
The cook house: Until the middle of the nineteenth century it was forbidden to cook over an open fire on a ship moored in the harbour. The danger of fire on wooden ships was simply too great and the town cook house was built to serve as the harbour cooking facility. The small, whitewashed building is from 1810. The Ærøskøbing Association helped with its restoration in 2001, and now again it serves its original purpose as a place where yachtsmen can prepare food.
The town windmill (of Dutch origin from 1848) has become a landmark for the town, and is approached from the south by the main road.