London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

A rocky sea serpent hides caves, blowholes, and a spectacular natural bridge.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Eighty million natural history specimens call this gargantuan museum home.

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

Catacombs turned marketplace.

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

The curios of pharmacist and collector Henry Wellcome.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Northern Ireland's Brobdingnagian stepping stones.

Famously misunderstood wonder of the ancient world

The bizarre headgear looks like it was made for a fool, not a king.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

One of the shortest streets in York has an especially odd name.

Follow the original medieval paths that wind through this intriguing section of the city.

An incredibly well-preserved piece of ninth-century Viking poop.

An icon of the Battle of Britain is frozen in flight in a grand Victorian museum.

Hidden on a cobblestone street in Glasgow, a Czech Cajovna-inspired teahouse serves as a hangout for Bohemians.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

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