One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A student driver's nightmare.

The atmospheric road was never meant to be so creepy.

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

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

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.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

Canyon walls shrouded in ferns.

A battle between nature and architecture in the Cambodian jungle.

The mysterious round rocks of Schooner Gulch.

Highly spherical boulders on the shores of New Zealand.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The art and history of the velvet painting are on full display in this Los Angeles museum.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

Rather than a run-of-the-mill franchise hotel, this lodging has been decked out in dinosaur decor.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

A series of modernist treehouse hotel rooms grace the outskirts of an Arctic forest.