While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

A drab two-story office space in Delaware is a hidden tax haven for Hillary Clinton, Donald Trump, and over half the Fortune 500 companies.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

This four-story steel sphere in Maryland was used to test biological weapons.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.