Ten impressive architectural viewpoints designed to stand out

Architectural viewpoints have been in the news lately with the opening of BIG's helical Marsk Tower and controversy surrounding MVRDV's Marble Arch Mound and Thomas Heatherwick's Vessel. Here are 10 impressive lookouts from Dezeen's archive.
Vlooyberg Tower by Close to Bone
Engineering studio Close to Bone created an 11.5-metre-high cantilevered staircase as a unique viewpoint in Flanders, Belgium.
Named Vlooyberg Tower, the free observation tower was constructed from orange weath