If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

A hacienda that features all things uniquely Yucatán.

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

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

This Gothic-style church is reputedly built atop the remains of one of Jesus's apostles.

This snug medieval lane is one of the narrowest streets in the world.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

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

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

17th century mosque for Shah Abbas' harem.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

Now abandoned, the world's first torpedo factory is crumbling into the sea.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

The 10,000 Torii shrine.

This strange statue features a bust of the famous composer plopped atop a woman's body.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

The Andean town where every single building is decorated with a brightly colored frieze.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

This giant temperature attraction created some giant electric bills.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.