‘Double Helix’ Marsk Watchtower unveiled

Marsk Watchtower in Denmark designed by architecture studio BIG have been unveiled, created to attract tourists to the area, the 25-metre-high viewing tower within the Wadden Sea National Park has a double helix structure.

Surrounded by UNESCO World Heritage-listed marshland in southwestern Denmark and it stands alongside the campsite’s restaurant and cafe, the tower rises 25 metres to give views across the national park and out towards the North Sea.


Made from Corten steel, the tower appears to be formed almost entirely from stacked steps. BIG designed the structure to have a double helix formation similar to that of DNA, with 146 steps on the way up and 131 on the way down.

“Marsk tower consists of a unique construction, where the design is based on nature’s twisted structure and human DNA strand,” explained Marsk Camp. “It is both a sculpture and an observation tower and is shaped like a double helix and designed in such a way that there is only one way up and another way down.”

The tower slowly expands outwards from a seven-metre base wide to a 12-metre-wide viewing platform at its top. A small elevator runs through the structure’s core to provide accessible access.

“When you have climbed the 146 steps and landed on the observation platform, you are standing 36 metres above sea level,” said Marsk Camp. “This gives a completely unique perspective on the otherwise flat marsh and a fantastic view over the Wadden Sea National Park.”

Fabricated by local company Schack Trapper, the structure was made from around 300 tonnes of Corten steel and it stands on a plinth constructed using 250 tonnes of concrete.

Images from Marsk Camp via Dezeen

Get our enews

Design and development news that comes to you


Winery takes a modern twist to its traditional Flemish barn

Taking cues from the rural landscape surrounding the winery, this Flemish winery is framed by its barn and ...

A house built on… another house?!

New York-based studio Architensions has designed House on House, the transformation of a compact suburban home in Babylon, ...

Unique pieces create charm within this restaurant

On the ground floor of a 17th-century renaissance building is a charming cast brass chandelier and a colourful ...

Plans unveiled for Australia’s tallest timber hotel

Adelaide-based developer Thrive Construct has unveiled plans to build the world’s tallest timber hotel in the city’s CBD ...


Stay connected to the SPEC

Join our reader network by signing up to our weekly newsletter and receive design and development news straight to your inbox

© 2018 Universal Media Co. All Rights Reserved. Privacy Policy. Terms of Service. The material on this site may not be reproduced, distributed, transmitted, or otherwise used, except with the prior written permission of Universal Media Co.