Library of Congress Reading Room
The octagonal reading room in Washington's Library of Congress contains about 70,000 volumes in its reference collection, and contains the main card catalog reference for all the works in the specialized reading rooms.
This photograph is a composite, created by stitching these 243 "component" images into one final image. The final image size is 35000 x 31450 pixels (1100 megapixels). This image can be printed at sizes up to 116 x 104 inches.