The oldest continuously operating fish market in the United States.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

The United States Capitol's former columns still stand.

The only home that Alexander Hamilton ever owned has a history almost as troubled as his own.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

The "Seinfeld" diner.

A dilapidated dock tells the story of Titanic's missed arrival.

The famous greeting card maker owns a collection of paintings by the famed surrealist.

A sprawling outdoor museum filled with larger-than-life works of art.

This protected area in Lake Huron contains some of the world’s best-preserved shipwrecks.

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.