An ancient Egyptian temple in the middle of Madrid, Spain.

Single runway interrupted by a busy road that cuts across its middle.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A fountain standing as a testament to a doomed alliance.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

Massive stele returned to Ethiopia after 70 years in Rome.

An Ethiopian "Jerusalem" featuring a church hewn out of a single rock.

An ancient Ethiopian cave church is endangered by the simple building of a road.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Sniff the Titan Arum's rotting flesh.

Holding the most bodies of any cemetery in the United States.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

The oldest continuously operating farm in New York State.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.