...A Big Ole Camera

The world's largest pinhole camera happens to be an entire building measuring 40x160x80 feet.

http://www.petapixel.com/2011/05/20/worlds-largest-camera-big-enough-to-hold-an-airplane/

"24,000 square feet of plastic, 1,300 gallons of foam filler, 1.52 miles of tape, and 40 cans of spray paint went into darkening the hangar. The “film” used was a 31 ft 7 in x 111 ft canvas (three stories high and eleven stories wide) that weighed 1,200 pounds along with the rigging. 80 liters of emulsion was used to make the canvas light sensitive. The aperture was a 6mm hole in the side of the hangar that projected the image onto the canvas. The photograph was exposed for 35 minutes. 600 gallons of traditional B&W developer was used to develop the canvas, and 1,200 gallons of fixer was applied afterward. It was then washed using fire hoses spraying at 750 gallons per minute. This is the massive photograph that resulted, which is the largest photo ever made (though not the largest print)."

The Great Picture, 2006, by The Legacy Project