This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

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

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 crumbling medieval basilica once attracted pilgrims by the thousands to collect a miraculous dust that formed above the saint's tomb.

This abandoned convent keeps the tomb of a legendary beheaded princess.

A rather vulgar example of the transition from Latin to the Italian vernacular.

Neo-cave art on the macro scale.

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

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.

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

No one knows the meaning behind this giant sculpture of a nude woman with a fork riding a rooster in Havana.

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.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

The house that birthed The Old Man and The Sea is now a museum devoted to the old man who wrote it.

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

A 16th-century monastery boasts a lush array of plants native to Mexico’s most biodiverse region.

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

A hacienda that features all things uniquely Yucatán.

Iconic red and white plaques show the creative names invented to navigate the city streets.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.