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

One of only two commuter aerial tramways in the United States.

A dilapidated dock tells the story of Titanic's missed arrival.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

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

Massive galleon from a box-office bomb docked in Genoa.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Da Vinci's equestrian statue, 500 years in the making.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

The mark of the Devil's horns on a marble column in Milan.

Five candy-colored villages on the Italian Riviera.

Italian cave with exceptional acoustics and an unsavory history.

The fairy tale castle of the "fairy-tale king."

The final resting place of the poets Shelley and Keats.

The yawning maw of this pagan visage is said to bite off the hands of liars.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Go inside to really appreciate this 500-year-old technological masterpiece.

Pilgrimage site for star-crossed lovers.

2300-year-old Roman road connecting the empire.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

South Korea's love of the silly photograph is on full display at this goofy collection of trompe l'oeil paintings.