A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

These pretty kitties killed and ate as many as 135 railway workers.

An Irish Memorial commemorating those who perished due to potato blight.

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

Electrical pylon in the shape of Disney's beloved mouse.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

Experience a charming 1930's version of "infotainment."

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

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

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

Oldest building in California still in use.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

A building so large that it has its own weather.

Abandoned Coast Artillery fort now serves as graffiti canvas and sightseeing vantage point.

This lovely hilltop tower was specifically built to withstand 100 MPH winds.

The first declared National Monument in the United States.