The fountain marks the area where hundreds of accused witches were burned at the stake.

Famously misunderstood wonder of the ancient world

The sign at the garden gate reads: "These Plants Can Kill."

A 30-acre garden inspired by the principles of modern physics.

The world's largest collection of witchcraft regalia.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A rare survivor from the age of plagues.

The haunting remains of a failed housing development can still be found behind the big box stores that were to anchor them.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

This curio museum seems like the type of place you might find a mogwai or a monkey's paw.

One of many gator theme parks, abandoned in the sugar fields of South Florida.

Though it may look like it’s missing its outer shell, this skeletal cast-iron tower was built to withstand wind and waves.

A local road runs around a memorial to a teenager who died in 1860.

Tucked away in the forests of North Florida resides a 19th-century lighthouse.

In a time before lifeguards, this house was a sanctuary for the shipwrecked.

The oldest house of worship in Palm Beach has a wonderful tropical garden.

Of course the guy with the first patent for an ice machine lived in Florida.

Near the ruins of a Civil War coastal fortress lies the only known African refugee cemetery in the United States.

This small Key West museum is packed with dozens of artifacts that illustrate the life of the iconic playwright.

The Tallahassee Airport serves over half a million passengers a year and is home to some permanent residents too.