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

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

Five candy-colored villages on the Italian Riviera.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

Only known mainland rookery of the threatened Stellar sea lion.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A clock designed to run with perfect accuracy for 10,000 years.

Named after a bandit and the star of several Hollywood prehistoric landscapes, these sandstone formations are a historical part of the Los Angeles natural landscape.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

The drama of nature in full effect in this Nevada State Park.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A fascinating insight into daily life in the Eastern Bloc.

The celebrated eyesore created by starry-eyed sweethearts.

Scattered throughout London are ancient remnants of the city's former bounding wall.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.