This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

Built just after the American Revolution, the oldest row house in New York City still stands in Chinatown.

Avoid gangster interaction while window-shopping.

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

The oldest Methodist church in the United States has been spreading the good news for over two centuries.

Unrepaired walls from a 1920 anarchist bomb attack.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The iconic Chicago sculpture hides a beautiful and easily overlooked plaque on the backside.

The Decoy Capital of the World.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

Largest Roman Catholic church in North America.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

The romance of early commercial flight still fills this Art Deco destination.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

This steamer is known as "The ship that built Cleveland."

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

An exotic wildlife habitat right off The Strip.