The most striking feature of Oasis 21 is its oval glass roof, filled with water, which can be visited (the view from up there is really nice) and acts as a huge cooler. And since it looks so cool, it also has an appropriate name: the Water Spaceship...
EXIF info:
Nikon D90
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8mm
Aperture: F/7.1
Shutter Speed: 1/1000s
ISO Sensitivity: ISO 200