A helical skyscraper that makes a distinct mark on the Dubai skyline, Cayan Tower is at once remarkable and subtle. The residential tower is a pure expression of the idea that a building’s form should directly follow its structural framework.
While the skyscraper’s 73 floorplates are all identical, each is slightly rotated against the story below it, resulting in a full 90-degree twist over the course of the tower's 307-meter rise. The benefits of this unique form, besides the aesthetic ones, are manifold. Wind load and solar heat gain are reduced compared to a rectilinear building of the same height, and a greater number of tenants are afforded desirable views of the nearby marina and gulf.
East Germany decided to upgrade the fortifications in the late 1960s to establish a "modern frontier" that would be far more difficult to cross. Barbed-wire fences were replaced with harder-to-climb expanded metal barriers; directional anti-personnel mines and anti-vehicle ditches blocked the movement of people and vehicles; tripwires and electric signals helped guards to detect escapees; all-weather patrol roads enabled rapid access to any point along the border; and wooden guard towers were replaced with prefabricated concrete towers and observation bunkers. 
CLICK HERE TO UPGRADE Because all these stations (and 10,000 more) can be at your fingertips ... Easily capture ANY media playing on your computer and play back when YOU want ... Internet Radio stations, podcasts, MP3's, Videos all can be easily recorded at a touch of a button. Start recording music now! Custom HTML 5 Audio Player Get a FREE HTML 5 Audio Player from our Sister Site - ZoomClock.