Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Historic funicular railway, believed to be the shortest railroad in the world.

After 400 years of being closed to the public, this monastery's underground tunnels and secret garden are now a museum.

Valletta’s outdoor theatre stands within the ruins of a 19th-century opera house.

A World War II-era sign in Valletta is a reminder of when Malta was besieged so severely that food needed to be rationed.

Both the World War II Allied Forces and NATO have used this modern bunker underneath Malta’s capital.

In a city of wooden houses, this watchtower was vital for early fire detection.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

This spectacular track has run continuously since 1882.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

Once owned by the largest employer in Colorado, these ovens have been abandoned for over a century.

A little-known hot spring haven right below the highway.

This Colorado fire station has been in continuous operation for more than a century.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A Rocky Mountain city provides a happy ending for a pinto pony and his Brobdingnagian red chair.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

Neal Cassady may still have an open tab at one of Denver’s oldest watering holes.

A multiversal transit station located right below a highway interchange.

A small store filled with animal skulls and other curiosities.