Copenhagen architects EFFEKT have today (20 January) won planning permission to build a 45m (147.6ft) spiralling observation tower in a preserved Danish forest.

Located in Gisselfeld Klosters Skove, one hour south of the capital, the structure will be part of Camp Adventure, an existing sports facility with tree top climbing paths and aerial zip lines. The tower will link to the rest of the attraction via a connected walkway leading visitors on a 600m journey around the forest.

While detailed design information has not yet been released, the architects said the tower will be set “gently and respectfully” against its beautiful backdrop. A continuous ramp will swirl from the bottom to the top, making it as accessible as possible.

EFFEKT have worked on several leisure projects in Europe, including GAME Streetmekka – a facility for street sport, skateboarding and urban culture, which they created within an abandoned train depot in the Danish seaport Esbjerg.

A number of creative observation structures that have recently been completed in Europe. These include architecture practice Close to the Bone’s gravity-defying tower in a Belgian forest, Franek Architects’ meandering Sky Walk in a Czech forest valley, MVRD’s giant staircase outside Rotterdam train station, and a triangular viewpoint built on the side of a Norwegian mountain.

Meanwhile, Swedish firm Anders Berensson Architects have been commissioned by the country’s Royal Court to investigate the future of twelve disused pylon towers in one of Stockholm’s national parks, with a view to transforming them into climbable community structures.