Gressholmen is an islet located in the

Oslofjord The Oslofjord (, ; ) is an inlet in southeastern Norway. The fjord begins at the small village of Bonn in Frogn, Frogn Municipality and stretching northwards to the city of Oslo, and then curving to the east and then south again. It then flows s ...

, just south of central Oslo. Administratively it belongs to the borough of

Gamle Oslo Gamle Oslo is a List of boroughs of Oslo, borough of the city of Oslo, Norway. The name means "Old Oslo", and the district contains Old Town, Oslo, Old Town. The borough has several landmarks and large parks, including the Edvard Munch Museum, t ...

Gressholmen airport Gressholmen Airport was a water aerodrome situated on the island of Gressholmen in Oslo, Norway. It served as the main airport for Oslo from 1927 to 1939, along with Kjeller Airport. The aerodrome consisted of docks, a landing ramp, terminal buil ...

was for the years 1927 through 1939 the location of the main airport for Oslo, until the construction of

Fornebu airport Oslo Airport, Fornebu was the primary international airport serving Oslo and Eastern Norway from 1 June 1939 to 7 October 1998. It was then replaced by Oslo Airport, Gardermoen, and the area has since been redeveloped. The airport was located at ...

. The airport was only for seaplanes. The ramp with rail tracks and the hangar are reused for boat storage and maintenance. There is railway point with the big

track gauge In rail transport, track gauge is the distance between the two rails of a railway track. All vehicles on a rail network must have Wheelset (rail transport), wheelsets that are compatible with the track gauge. Since many different track gauges ...

. The island is easily accessible from Oslo with the local ferries. The access point is on the North side. A big part of the island is a nature reserve.Gressholmen, Heggholmen and Rambergøya islands
''visitnorway.com,'' Retrieved 26 January 2024

The name

The first element is ''gress'' ('grass') - the last element is the finite form of ''holme'' ('islet'). The island is today connected with the two former islands of ''Rambergøya'' ('Raven rock island') and ''Heggholmen'' (' hagberry islet').

References

Islands of Oslo {{Norway-island-stub