The underground sanctuary of a mysterious ancient cult.

Remnants of a Victorian garden feature sitting in public woodland.

A beautiful but toxic fountain of mercury.

The middle finger of modernity.

The anatomical-pathological collection of a man who changed surgery.

This tangled English forest looks like something right out of a fairytale.

A historic house left in "dramatic still life."

Walk through Czech history in Prague's largest graveyard.

This castle was established by the 4th Duke of Montrose and is connected to the Buchanan Clan.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

This neighborhood thoroughfare is haunted by dozens of homemade monsters.

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

This series of Scottish caves has no clear purpose other than baffling historians.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

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

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

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

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.