This is the name of the Island, the town´s name is Vaxholm.
Vaxholm is a locality and the seat of Vaxholm Municipality, Stockholm County, Sweden. It is located on the island of Vaxön [sv] in the Stockholm archipelago. The name Vaxholm comes from Vaxholm Castle, which was constructed in 1549 on an islet with this name on the inlet to Stockholm, for defence purposes, by King Gustav Vasa.
Google-panorama: goo.gl/maps/F2pKpynj8f2Lhtaz9