300px|thumb|Gresholmen, seen from Bleikøya Gressholmen is an islet located in the Oslofjord, just south of central Oslo. Administratively it belongs to the borough of Gamle Oslo.
300px|thumb|Gresholmen, seen from Bleikøya 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. The ramp with rail tracks and the hangar are reused for boat storage and maintenance. There is railway point with the big track gauge.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).