Forced perspective is a technique that exploits the relationship between distance and size to make large objects appear smaller or vice versa. This technique has been exploited in movies such as The Lord of The Rings franchise to make actors appear smaller (Hobbits) with relation to other actors. The technique is also used by professional photographers to create illusions and also by amateur photographers to create fun pictures. The classic use of the force perspective technique is when people get photographed holding up the leaning tower of Pisa in Italy.
I made a forced perspective photograph of my own while visiting the Rumsey Monument in Shepherdstown, West Virginia. This is a monument to a local inventor, James Rumsey, who in 1787 became the first person in the United States to build and pilot a steamboat. The monument, which is located near the Potomac River where Rumsey made his trek, contains a 75-foot-tall granite column capped with a globe. The column sits atop a 40 square feet concrete base. In the photograph I use forced perspective to make it look like I am wearing the column of the monument on my head!
Leaning tower of Pisa image from flickr by Jeffrey is used here under an Attribution-NoDerivs 2.0 Generic (CC BY-ND 2.0) license. The photographs of the Rumsey monuments belong to the author and can only be used with permission.