Legend has it that Gangerolf (outside of Norway better known as Rollo), the 10th century founder of the dynasty of the dukes of Normandy, hailed from the community of Giske, north-west of Ålesund. At least three statues of Rolle exist: in the town park in Ålesund, in the city of Rouen, France, and in Fargo, North Dakota, United States

Ålesund municipality occupies seven of the outer islands in the county of Møre og Romsdal: Hessa, Aspøy, Nørvøya, Oksnøy, Ellingsøy, Humla and Tørla. The city centre is located on the islands Aspøy and Nørvøy, while Hessa and Oksnøy contain residential areas. The second largest island, Elingsøy, used to be accessible only by boat or by road via Skodje municipality, but a subsea tunnel was built in 1987 to make travelling between the island and the city centre more convenient. The tunnel is 3,481 metres long, and is currently being upgraded. Situated 236 km north northeast of Bergen, Ålesund is adjacent to the Hjørund and Geiranger fjords, the latter being on UNESCO's list of World Heritage Sites