U.S. twenty dollar bill
The $20 bill is a denomination of United States dollar, the currency of the United States of America.
History
The design on the back is the White House.
The $20 bill is sometimes nicknamed a "double-sawbuck," although this usage is far less common today than it was in the early 20th century.
See also: United States Notes
External link: http://www.currencygallery.org/denoms/20dollar.htm

