PHILADELPHIA, USA - JUNE 12, 2013: People visit George Washington monument in Philadelphia. As of 2012 Philadelphia is the 5th most populous city in t

- Image ID: T4B52K

PHILADELPHIA, USA - JUNE 12, 2013: People visit George Washington monument in Philadelphia. As of 2012 Philadelphia is the 5th most populous city in t

Marek Slusarczyk / Alamy Stock Photo

Image ID: T4B52K