This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

Famously misunderstood wonder of the ancient world

Fascinating town where normal life interfaces with the occult.

The largest greenhouse in the world is home to over one million types of plants.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Go inside to really appreciate this 500-year-old technological masterpiece.

The world's largest collection of witchcraft regalia.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

Created hundreds of years ago, the magical follies and landscapes at this park were almost lost to time before being restored.

A museum in the childhood house of a medical pioneer.

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

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

Once the home of a hermetic monk, this cave now houses a small church.

David Sedaris called it "The greatest shop in the world."

Eighty million natural history specimens call this gargantuan museum home.

A 200-year-old collection of oddities and medical paraphernalia.

Of course Salvador Dalí lived in a castle...

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

This Gothic Revival castle used as a shooting location for "The Secret Garden" and other films.

360° views of the city plus five floors of optical illusions and hands-on science.

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