Why do you need people on the bills anyway?
Buildings looks just fine as well.
(Note: I don't support the Euro... I just think they look very beautiful)
Ugh. Imaginary buildings.
Here's what I would put on U.S. currency and coins if I could dictate such things.
Currency$500: James Madison / Christy's
Scene at the Signing of the Constitution of the United States$200: John Marshall / Supreme Court courtroom
$100: Benjamin Franklin / Trumbull's
Declaration of Independence (formerly on the back of the $2 bill)
$50: Henry Clay / U.S. Capitol
$20: John Adams / White House
$10: Alexander Hamilton / Trumbull's
Washington Resigning his Commission$5: Abraham Lincoln / Martin Luther King's
I Have a Dream speech at the Lincoln memorial
Coin ($2 to $¼ to have a bald eagle on the reverse)
$2: [bimetalic ring] Old Faithful
$1: Statue of Liberty (current reverse of the $1 presidential dollar series)
$½: [new 4.05g coin of the same composition as the $1] Golden Gate Bridge
$¼: George Washington
dime: Ring of thirteen stars / Liberty Bell
nickel: [same size, but nickel-plated steel] Indian Head / Buffalo