Enter this small nook and you'll be surrounded by 360 degrees of street art.

This declassified Cold War bunker hosts a large collection of Swedish aircraft.

The place to be if you love vintage Swedish cars.

The world's biggest floating museum in Gothenburg, Sweden.

This Copper beech tree nestled on a nature reserve is host to a bevy of autographs from Irish literary icons.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The stately remains of Llywelyn the Great's mighty fortress.

This former World War II torpedo testing location is now an important nesting site for migratory birds.

The symbolic center of Ireland, this summit also offers panoramic views of the countryside.

The city of Manchester quietly unveiled this tribute to a 19th-century massacre.

A Victorian marvel of engineering is now a 21st-century tourist attraction.

A mysterious Neolithic tomb is perched along the edge of a modern golf course.

The inscribed stone at Kilnasaggart is a remnant from nearly a millennium ago.

A small plaque highlights the damage caused by German air raids during World War II.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

A museum marks and documents the site of the Titanic's launch.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

The whiskey producer's archives includes a historical list of infractions committed by and associated penalties exacted upon employees.

The world's only flying boat museum honors a small Irish village that sent 20th-century aviation to new heights.

Impressive mining ruins overlook a spectacular view of Ireland's Copper Coast.

An ancient chamber filled with wonderful rock art and a Neolithic carving of a human face.

This ancient Irish landscape boasts hundreds of legendary ruins.

A reliquary of pop culture marvels, including the world's largest (and most terrifying) Jack-in-the-Box.

A humble air museum located in an original World War II aircraft factory.