Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

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

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

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

After the comedian dissed a Connecticut town on his show, they named a sewage treatment plant after him.

This sound-art installation features songs composed using only the Mid-Hudson Bridge as an instrument.

A sweet symbol marks the place where torturous executions were once carried out.

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

These wooden pipes were crucial to providing water to Medieval Edinburgh.

A remarkable feat of Victorian engineering across the Firth of Forth.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

Enter the world under the hill at this ancient UK burial chamber.

This tin chapel was built by POW's during World War II and is painted to look like something much more grand.

Possibly the oldest of Britain's ancient henges is also one of its most stark.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

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.

The sign marks one of the endpoints to mainland Britain's longest overland travel route.

All that remains of the once-booming chain is a single orange-roofed restaurant.

A converted hangar displays dozens of helicopters, from a famous 1943 rescue chopper to several autogyros.

This museum-within-a-museum pays tribute to "The World's Most Experienced Airline."

The longest-covered bridge in the state of Maryland.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

Amsterdam's former hotspot for public executions and dissections.