Korketrekkeren is a stretch of road in Oslo that offers a unique experience with its characteristic bends and loops. The road was built by consul Thomas Heftye at the end of the 19th century and has since become a well-known route for both walkers and cyclists. The special design includes a bridge that the road crosses, as well as another bridge that the road passes under, which provides an interesting and varied route down towards Nøklevann.
The place is part of Østmarka, which is a popular outdoor area in Oslo. The corkscrew is also known by several names, including the Swing Bridge, the Spiral and the Serpentine. In 2016, the bridge was restored by the City Environment Agency, which has contributed to preserving the site's historical and aesthetic value. This area attracts both locals and visitors who want to enjoy nature and the scenic surroundings.