Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

A mountaintop space observatory that is certified dark.

A museum celebrating rare American motorcycles where everything runs—and none of it quietly.

400-year-old garden, restored to beauty.

This 880-acre facility is home to a massive collection of vintage motorcycles and cars, as well as a 2.38-mile race course.

This site in Caldwell County is the location where the Cherokee and Catawba are said to have entered a peace treaty.

A mysterious shape catches the eye in this 16th-century painting.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This remote mountain shrine is one of the most sacred Zoroastrian temples remaining in the world.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

London's smallest police station is barely the size of a phone booth.

Fourteen curious and controversial white bunnies sit in a circle near Newport Beach City Hall.

This modern monument to pagan belief looks like it was transported straight from ancient times.

This tiny museum's sizable collection is jammed into a former underground public toilet.

A lonely beacon, precariously perched atop a remote sliver of rock.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

A collaboration of art and ornithology mourns the calls of Sydney's lost birds.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A natural gas leak provides a flickering flame beneath a waterfall.