Brottby
Brottby is a locality situated in Vallentuna Municipality, Stockholm County, Sweden with 262 inhabitants in 2018. In January 1998, the place was brought attention when the police intervened against a Neo-Nazi rock concert here. Buildings. Össeby-Garn Church is a local parish church, located near the northern tip of Garnsviken. Built in the 13th century (with a porch added in the 15th), Össeby-Garn Church is a Romanesque stone church typical of Uppland. Two runestones have been placed outside the church, and another has been built into the church floor. Össeby Church, situated some southwest of Össeby-Garn  Church, was possibly built at the end of the 14th century. As the parishes of Össeby and Garn were merged in 1838, the Garn parish church (now Össeby-Garn Church) assumed the roles of Össeby Church whose building, already in a bad state of repair, was abandoned. Össeby Church was finally ruined in a fire in 1856.