A blues musician so talented that people said he must have traded his soul to the devil was born in this house.

Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

A reproduction of the famous prehistoric cave paintings is hidden underground at the National Archaeological Museum.

This embalmed man is one of the best preserved mummies from the Canary Islands.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

This small museum tucked within a subway station holds pieces from Madrid's past.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

The earliest known map to show America, discovered by accident at a Paris bookshop.

This house's itty bitty size means no humans allowed.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

The octagonal tower at this important Buddhist site was added many years after the temple's initial construction.

A bulky, ancient stupa marks the site of Siddhartha Gautama's seminal Buddhist teaching.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.

The first English fort built in India.

The beautiful 16th-century stepwell lies in the shadow of a famous fortress.

Scholar, adventurer, saint, and instigator of the Goa Inquisition.

A startling, centuries-old subterranean marvel hides in plain sight.

Made by a man on a worldwide sanitation crusade.

Designed as a 17th-century watchtower, the former fort is now a popular sunset haunt.

An 18th-century fort in the business district of Mumbai.

Nineteen ancient rock-cut Buddhist caves can be found on the outskirts of Mumbai.

Tucked in Mumbai’s wealthiest neighborhood is one of the city’s oldest and most sacred sites: a temple complex believed to house the waters of the Ganges.

This basement museum explores the art and artistry of fascism.

Amsterdam's Red Light District leaves little to the imagination.