This is a 360 degree panorama taken from inside Sounio temple. Various constellations are visible like the Big Dipper, next to the Athens light pollution, between the pillars, and the Orion at the upper right corner of the photo. See also the crescent Moon rising at the center.
Canon EOS DIGITAL REBEL XTi, 13/11/2009 3:41 - 4:09, Shutter Speed 20 sec x 58 shots, Aperture Value 2.2, ISO 800, Lens Canon EF28mm f/1.8 USM, Focal Length 28.0 mm