Perhaps the last significant change came in 1935 when the mysterious pyramid and eye was added to the back of the bank note. Known as the Eye of Providence, the image has sparked countless ...

The iconic pyramid with an eye on top of it has been a long-standing source of speculation on the one dollar bill. It's a part of the United States' many traditions steeped in history and lore.

In 1940, people first started to notice there could be more to the Great Pyramid's outer layer than first met the eye. British Egyptologist Flinders Petrie looked at a set of publications on ...