Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

A curious fountain that has no water and includes Satan, a crab, and 9 giraffes.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Mysterious 500-year-old tapestries depict a unicorn hunt.

The "Seinfeld" diner.

This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

A Medieval Water Tower in the Heart of Massachusetts.

Site of the creepy house used in Lucio Fulci's "The House by the Cemetery."

Fascinating town where normal life interfaces with the occult.

A Cuban artist reclaimed his impoverished neighborhood as a dreamy folk art kingdom.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Live a night as a Byzantine King, with a minibar and private jacuzzi.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.

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

A marvel of Byzantine engineering under the streets of Istanbul.

The stoutest tree in the world.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

This Ecuadorian cemetery is home to a jaw-dropping topiary wonderland.

A turquoise lake within a volcanic crater.