This photo features a wooden barn in the foreground and Grand Teton in the background. Grand Teton is the highest mountain in Grand Teton National Park, Wyoming, USA.

An awesome review of the M.C. Escher exhibit at the National Gallery of Art. There are 24 images of Escher's works here out of the 330 that the National Gallery has on hand. There is also a biography on Escher that is very useful.