The unbelievably opulent home built for an infamous newspaperman.

The venerated body of a 12th century saint is celebrated each year with the 'Race of the Candles.'

A unique museum tells the story of the day-to-day life of World War I soldiers.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

A subterranean playground in an abandoned slate mine.

Fulham F.C. imploded once everyone excised its giant, hated tribute to the King of Pop.

A tiny, hidden alleyway dedicated to the father of meteorology.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

The longest and tallest aqueduct in Britain can actually be sailed across.

A 168-foot tower, part of the abandoned Chester Leadworks facility.

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

The oldest continuously operating church in California.

In the hinterlands of Serbia's capital, a giant reflective mushroom houses an aeronautical history of the former Yugoslav republic.

A pair of connected skyscrapers form this symbolic gateway.

A Serbian church lit by chandeliers made of weapons.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A misnamed well, with a deep dark past.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”