Near the village of Borgnæs, the highway follows the beach, and here used to be a small entrepot, a windmill and Ærø’s only water mill. Of the latter, the stately main building and the millpond have been preserved.
Between the villages of Brejninge and Skovby, the ground is high and slopes down towards the coast. The highest point of Ærø, Synneshøj, which reaches 67 metres above sea level, is located in this area. The voyage along the high coast is very striking.