The Sail @ Marina Bay by Peter Pran NBBJ

"The design concept for this mixed use residential tower is a sculpture that is created by the hands of nature - Sun, Wind and Water. The design exemplifies and defines natural forces with the overall composition created as if it were formed by water passing through the site. The result includes two prominent towers and a sculpted base. A "canyon" is formed separating the base from the tower mass and becomes an important urban space that exposes a lush green environment to inhabit." to find out more...
Passage from http://www.peterpran.com/peterPRAN.swf
Image via http://www.flickr.com/photos/adforce1/4410722319/ by William Cho