| Heggholmen Lighthouse Gressholmen | |
| Location: | Oslo Norway |
| Coordinates: | 59.8854°N 10.7137°W |
| Yearbuilt: | 1827 |
| Automated: | 1972 |
| Construction: | wooden building |
| Shape: | small lantern placed at one corner the keeper's house |
| Marking: | white lighthouse, red lantern roof |
| Height: | 15m (49feet) |
| Focalheight: | 6m (20feet) |
| Lens: | 6th order Fresnel lens |
| Intensity: | 775 cd |
| Characteristic: | Iso G 1s. |
| Managingagent: | Oslo Havnevesen[1] |
Heggholmen Lighthouse (Norwegian: Heggholmen fyr) is a coastal lighthouse located in the Oslofjord, in the municipality of Oslo, Norway. It was established in 1827, and automated in 1972. The lighthouse was listed as a protected site in 1998.[2] [3] [4]