A Photograph An Engineer Would Love
This is a photo of the interior of the cargo compartment of the 747 "Dreamlifter" that is used to carry large parts to Everett, Washington that are used in the assembly of Boeing's new 787 "Dreamliner". I really like the symmetry and the scale, it has a cathedral-like quality to it...in an airplane sort of way.
The tail section of this airplane swings open to allow the on and off-loading of these parts.

Photo Credit: The Boeing Company
This is what the "Dreamlifter" looks like from the outside -

Photo Credit: The Boeing Company