Gressholmen

Gressholmen is an islet located in the Oslofjord, just south of central Oslo. Administratively it belongs to the borough of Gamle Oslo.

Gressholmen airport was for the years 1927 through 1939 the location of the main airport for Oslo, until the construction of Fornebu airport. The airport was only for seaplanes.

Coordinates: 59°53′04″N 10°43′13″E / 59.88444°N 10.72028°E / 59.88444; 10.72028