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Österåker Golf Club (Österåkers Golfklubb) is a golf club situated in Åkersberga 20 km northeast of Stockholm, Sweden. It has hosted the Compaq Open on the Ladies European Tour.

Stava is a locality situated in Österåker Municipality, Stockholm County, Sweden with 305 inhabitants in 2010.

Norrö is a locality situated in Österåker Municipality, Stockholm County, Sweden with 305 inhabitants in 2010. It is situated some 2.5 kilometres (1.6 mi) north of the town of Åkersberga.

Rydbo is a locality situated in Österåker Municipality, Stockholm County, Sweden with 582 inhabitants in 2010. It is situated about 20 km north-east of Stockholm and is served by Roslagsbanan narrow gauge suburban railway. Near Rydbo is Rydboholm Castle.

Rydboholm Castle (Rydboholms slott) is a castle located near the village of Rydbo in Österåker Municipality, Stockholm County, Uppland, Sweden.

Österåker Municipality (Swedish: Österåkers kommun, IPA: [ˈœ̂sːtɛrˌoːkɛʂ kʊˈmʉːn]) is a municipality in Stockholm County in east central Sweden. Its seat is located in the town of Åkersberga, with a population of 26,727 (2005). From 1974 to 1982 Österåker was part of Vaxholm Municipality. Its location by the Stockholm archipelago, in the Roslagen area, attracts both people who settles here, often commuting to Stockholm, and visiting tourists. Österåker boasts several golf courses, many possibilities for canoeing, horse riding, fishing and other nature activities. Österåker also has a historical significance, with at least three notable castles from the 17th and 18th centuries, with histories tracing even further back. Sweden's once largest quartz mine, the Härsbacka mine, lays within the municipality.Like many other municipalities making up Metropolitan Stockholm, Österåker has a significant outward-commuting mainly to Stockholm, with some 13,000 commuters.

Åkersberga is a locality and the seat of Österåker Municipality, Stockholm County, Sweden with 28,033 inhabitants in 2010.

Bogesundslandet is a peninsular in Vaxholm Municipality, Stockholm County, Sweden. Most of the peninsular is occupied by the Bogesundslandet nature reserve.

The Österåker Prison (Swedish: Anstalten Österåker, commonly known as Österåkersanstalten) is a prison located in Österåker Municipality, thirty kilometers north of Stockholm, Sweden. It is a Class 2-security prison with a capacity for 146 inmates. The facility also contains a remand prison with the capacity for 80 inmates.

Ullna Golf & Country Club is a golf club situated 20 km north of Stockholm on the shore of Lake Ullna in the municipality of Österåker, Sweden. The premier championship venue in the region at the time, it hosted the Scandinavian Enterprise Open on the European Tour 1983–1987.

The 1988 Eisenhower Trophy took place 15 to 18 September at the Ullna Golf Club near Stockholm, Sweden. It was the 16th World Amateur Team Championship for the Eisenhower Trophy. The tournament was a 72-hole stroke play team event with 39 four-man teams. The best three scores for each round counted towards the team total. The combined team of Great Britain and Ireland won the Eisenhower Trophy for the third time, finishing five strokes ahead of the silver medalists, United States. Australia took the bronze medal, a further eight strokes behind with Sweden finishing fourth. Peter McEvoy, representing Great Britain and Ireland, had the lowest individual score, 4-under-par 284, six strokes better than Australian David Ecob.

Bogesund Castle is a former manor in municipality of Vaxholm, about 15 kilometres (9.3 mi) to the east of Stockholm, Sweden. It is located in the center of the Bogesundslandet nature reserve (Bogesundslandets naturreservat). The castle style building overlooks the main shipping channel into and out of Stockholm through the Stockholm archipelago.