Gressholmen
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We are now passing Gressholmen and Heggholmen Lighthouse. It was actually an airport here! When it was built in 1927, it was also Norway's first scheduled airport. Heggholmen Lighthouse was built in 1876 and has both a light and a fog bell to safely guide boats into the Oslo harbor. The bay between the islands is an important nesting and grazing area for seabirds. Over 160 different bird species have been recorded, and 340 different plant species documented on the islands. Because of this, the area is registered as a nature reserve, and camping or lighting fires on the islands is not allowed.