Bohol's mysterious brown hills.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A self-funded cemetery with a long list of inhabitants.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

Scary metal statues adorn some of the signature buildings of Burlington, VT.

The real-life site of Ichabod Crane's infamous gourd attack.

Catering to broken dolls for almost 200 years, this repair shop is now a charnel house of doll parts.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

The oldest church in Mantua was buried for centuries under the facades of other structures.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

This tribute to the 16th-century composer is now an unusual shrine to Michael Jackson.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

The stoutest tree in the world.

This beautifully deceptive waterfall is something far different from what it appears to be.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.