No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

These azure waters were thought to lead to the Mayan Underworld.

This singular Mexican structure is considered a masterpiece of the Tapatía architectural school.

For decades, the parade of apostles that left the Expiatory Temple of Guadalajara remained hidden inside one of the towers.

Inside one of Guadalajara's oldest houses, you can find puppets and foam models of the city's missing buildings.

This historic cemetery built for victims of the epidemics that swept Guadalajara is shrouded in macabre tales.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

Town of spiritualists and mediums in Florida.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

A haunted hill that supposedly defied gravity.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

This colorful theme park dedicated the official fruit of Maine serves sweet, tasty treats.

A complicated, forgotten beacon of hope for thousands of immigrants, "Canada's Emerald Isle" lies in ruin.

Explore the ruins of war and maritime history along this gorgeously ferocious North Atlantic seascape.

This Canadian island is a veritable garden of decay with countless abandoned structures dotting the landscape.

An oil baron's wild paradise and the winner of an ill-fated air race.

This small-town museum is dedicated to the original western movie mega-star.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

A gorgeous medieval library where the books are kept in chains.

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

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

A huge enchanting public park just outside the ancient walls of Rome.