The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

This iconic water tower and failed bandstand is open for panoramic views once a year.

The U.S. military dumped millions dollars worth of goods off a beach in Vanuatu, purely to spite the British and French.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

Two nations form a rare four-sided border at the peak of a mountain, philosophical questions result.

One of America's oldest Antarctic research bases is abandoned but still just waiting for visiting explorers.

The deadliest diving spot in the world is also a stunning geological marvel.

A sturdy relic of Britain's once crucial gunpowder industry is now a haunting Cornish ruin.

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

A quiet and contemplative oasis in the middle of New York's bustle and riot.

Traversing steep Alpine slopes, this engineering marvel is one of the longest and highest funiculars in the world.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This abandoned Antarctic research station is a Soviet ghost frozen in time.

New Brunswick's tallest mountain is the highest point in all the Maritimes.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

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.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

Once known as the Illinois Asylum for the Incurable Insane.

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.