On the front is Benjamin Franklin, and on the back is the United States Independence Hall.
Like the $50 bill, the $100 bill got a Series 1988 in 1989, and production continued through January 1991.
In 1991, microscopic printing was added around Franklin's portrait on all newer $100 bills, before they began circulation as Series 1990.
The $100 bill was redesigned in 1996 as Series 1996.
The current design of the $100 bill began production in early 2010, and went into circulation on October 8, 2013. It was a Series 2009A.