The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

The attic of a four-century-old canal house hides a clandestine church.

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

Cat art as far as the eye can see.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

A curious collection dedicated to human and animal anatomy and pathology.

Museum preserving torture methods from the past.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

The crumbling remains of a 19th century fortess.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

This knobby, drooping New Orleans oak is a favorite place both for climbing and for meeting giraffes.

New Orleans' famous cemetery, located on the site of a former race track.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The curiosities and wonders of pharmacy in a delightful historic building.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

A snapshot of the city's fascinating voodoo culture.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.