A natural swimming pool in the middle of the Carite Forest.

The world's second largest single-dish radio telescope, once used to contact E.T.

An enchanting natural wonder in Puerto Rico's Camuy River Park.

La Cara del Indio honors the Taíno chief who fought bravely against the Spanish invasion of Puerto Rico.

Where commuters walk through remnants of an ancient Greek necropolis.

Legend says this sacred tree was a gift from goddess Athena.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Legend says it was constructed with the destroyed pillar of an ancient Greek Temple.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

These artifacts were discovered during the construction of the airport, with some dating back to the Neolithic period.

The hallucinogenic center of the ancient world.

The second oldest continuously operating bar in Louisiana.

One of the oldest continuously-operated gay bars in the United States is allegedly haunted by Truman Capote and Tennessee Williams.

A snapshot of the city's fascinating voodoo culture.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

The beautiful, fruit-covered facade hints at this building's former life.

This Garden District mansion was built to be bigger and grander than its original owner's former partner turned rival.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

New Orleans' famous cemetery, located on the site of a former race track.