That's right, 1600 Pennsylvania Avenue in Washington, D.C. is not only home to the current President of the United States, it also is home of several former presidents who occasionally decide to make their presences known there, despite the fact that they are dead.

President Harrison is said to be heard rummaging around in the attic of the White House, looking for who knows what. President Andrew Jackson is thought to haunt his White House bedroom.

And the ghost of First Lady Abigail Adams was seen floating through one of the White House hallways, as if carrying something.

The most frequently sighted presidential ghost has been that of Abraham Lincoln. Eleanor Roosevelt once stated she believed she felt the presence of Lincoln watching her as she worked in the Lincoln bedroom. Also during the Roosevelt administration, a young clerk claimed to have actually seen the ghost of Lincoln sitting on a bed pulling off his boots. On another occasion, while spending a night at the White House during the Roosevelt presidency, Queen Wilhelmina of the Netherlands was awakened by a knock on the bedroom door. Answering it, she was confronted with the ghost of Abe Lincoln staring at her from the hallway. Calvin Coolidge's wife reported seeing on several occasions the ghost of Lincoln standing with his hands clasped behind his back, at a window in the Oval Office, staring out in deep contemplation toward the bloody battlefields across the Potomac.