A wall at the Perimiter Institute. They're all actual office windows.
Exposure Date: 2011:09:18 12:39:03;
Make: Canon;
Model: Canon EOS DIGITAL REBEL XSi;
Exposure Time: 1/200.0 seconds s;
FNumber: f/8.0;
ISOSpeedRatings: ISO 100;
ExposureProgram: Other;
ExposureBiasValue: +42949672950/6
MeteringMode: Other;
Flash: Flash did not fire, compulsory flash mode;
FocalLength: 20.0 mm mm;
Software: Adobe Photoshop CS3 Windows;