Famously misunderstood wonder of the ancient world

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

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

The abandoned transportation hub hides within the Glasgow attraction it once served.

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

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

This early version of the guillotine was used to execute the man responsible for its construction.

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

Protecting the dead from opportunistic body snatchers.

A scattered trail of street art adds a pop of color to the city's stark structures.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Largest lake in Great Britain measured by surface area.

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

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

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

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

This unassuming passageway played a key role in one of the most important events in U.S. history.

This taxidermy horse was a Civil War hero.

Also known as the Founding Church of Scientology.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.

Look closely and you’ll notice that the color changes a third of the way up the tower.

A portal into the bricked up canal that runs through the heart of Washington D.C.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Before founding the American Red Cross, Clara Barton had a tremendous humanitarian impact by locating thousands of missing soldiers.