This plaque marks the former home of one of the first women physicians in the Netherlands.

What was once a bustling mining installation is now a bustling hub of contemporary art.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.

This ghost town in Belgium will lose its street art when it ceases to exist.

Hiding the longest subterranean river known in the world.

The Belgian library displays burned books that were salvaged from the fires of both world wars.

This statue of a studious young woman stands at the site of Leuven's first college to accept female students.

A small statue commemorates a centuries-old event that still hangs over the people of Leuven.

A tiny metropolis resides inside this student housing complex.

This small-town museum is dedicated to the original western movie mega-star.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

Where the author wrote her beloved "Little House" books.

This "little gallery in the middle of nowhere" is housed in a 170-year-old horse barn in the Missouri Ozarks.

Over 600 vacuum cleaners stack the shelves of what may be the cleanest museum in America.

A cave 150 feet beneath Kansas City is the perfect climate for growing 10,000 delicate orchids.

A late sculptor's last project was to turn this abandoned cement factory into a castle-themed amusement park.

This unassuming riverbank is Missouri’s first designated site in the National Underground Railroad Network to Freedom.

Nestled in Onondaga State Park, over 100 canoes carefully stacked in a replica of the famous standing stones.

This unconventional used book store was once in the news for the surprising act of burning books.

During the 19th-century, this park was a vital trading fort.

This museum features the original car used on the Beverly Hillbillies sitcom.

This repurposed church offers a more literal way to get closer to the heavens.

This museum houses artifacts from American adventurers and filmmakers Martin and Osa Johnson.

The face of the famed flier in a hillside in her hometown.