“It has nae lugs!”

Last remaining nuclear missile base in Ukraine.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

The fastest way to send a message before electricity was invented.

One of the world's oldest universities houses an incredible collection of anatomical models, mummified body parts, and human bones.

Sculpture park built by a 50-year-old widow.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.

A monument to the bloody fight against fascism in Slovakia during World War II.

High in the clouds of San Marino sits an ancient tower with some curious prisoner graffiti.

Site of the largest impact event to occur over land in Earth's recorded history.

A medieval church built up to defend its village.

This historic streetcar system has been running since the 19th-century.

The shattered remains of the world's once tallest structure.

Right angles in the forests of Panama.

Norway's chilly all ice-instrument festival.

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

One of the tallest waterfalls in Africa is also home to a population of monkeys who enjoy the waters and the occasional guest.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This 13th century Orthodox monastery is built right into the Moldovan cliffside.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

At more than 5,000 years old, these structures are among the oldest free-standing stone buildings in the world.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

A memorial to the murdered Jews of Kaunas.