Possibly the world's smallest museum is home to one exhibit that sheds light on the capital city's dark criminal history.

The Zalud family experienced a number of tragedies in one decade, giving rise to rumors that the 19th century house is haunted.

Kitschy horror displays now fill the house where some very real serial killing took place.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Once the legendary capital of the Dacian Kingdom, this city has been reduced to mere ruins.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

An ancient burial ground believed to have been used for ritual sacrifice.

The ancient heart of Tunis is an enormous maze of narrow streets and alleyways.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

The secular incarnation of a religious meditation.

Step inside an ancient beehive tomb built for a mysterious cult hero.

This vintage gem is one of the oldest surviving purpose-built movie palaces in Scotland.

A massive collection of rare and antique books in a tiny ranching community in northern Texas.

This video store is a horror buff's dream.

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

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.

This Transylvania County city is home to a rare white squirrel population that is descended from an escaped carnival animal.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A speakeasy takes on Chicago's drinking culture.

360° views of the city plus five floors of optical illusions and hands-on science.

This woodland architectural installation acts as a camera obscura for the heavens.

An atmospheric, medieval-themed book store hides in a 13th-century underground space.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.