Gressholmen is an islet located in the

Oslofjord The Oslofjord (, ; en, Oslo Fjord) is an inlet in the south-east of Norway, stretching from an imaginary line between the and lighthouses and down to in the south to Oslo in the north. It is part of the Skagerrak strait, connecting the Nor ...

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

Gressholmen airport Gressholmen Airport ( no, Gressholmen sjøflyhavn) was a water aerodrome situated 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 ...

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

Fornebu airport Oslo Airport, Fornebu ( no, Oslo lufthavn, 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 redev ...

. 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 (in American English, alternatively track gage) is the distance between the two rails of a railway track. All vehicles on a rail network must have wheelsets that are compatible with the track gauge. Since many ...

. 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 www.visitnorway.com
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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 {{Oslo-geo-stub