Kapellskär is located to the east on Rådmansölandet, about 20 km from Norrtälje. It is famour as the "port to the east" with ferries connecting you to Åland, Finland and Estland. The harbour is very old and one of the oldest in Norrtälje county, from the middle ages!

Around Kapellskär you can find Riddersholm's mansion, a beautiful nature reserve and a monument from the tragic sinking of Estonia.