The two skyscrapers are connected at the top floors with the amazing open-air Floating Garden Observatory. Nothing blocks the 360-degree view towards outside (so it's a paradise for taking photos), while the view towards inside is impressive - a circular, 170 meters high gap, crossed by two glass-walled escalators:
EXIF info:
Nikon D300
Lens: 8-16mm F/4.5-5.6G
Focal Length: 8mm
Aperture: F/7.1
Shutter Speed: 1/400s
ISO Sensitivity: ISO 200