The only arched bridge made of stone on the entire Mississippi River.

The oldest continually used church in Minneapolis also sells great meat pies.

When flour explodes, it's not a pretty sight.

The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

DIY collection of eclectic holdings.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The oldest living organism in New York City. Maybe.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

Quality time with reindeer in the stunning scenery of their natural Lappish habitat above the Arctic Circle.

Shoreline strewn with the remains of ghostly fallen trees.

More than 5,000 contemporary and "historic" mustards from around the world.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A modern addition to the Greenpoint skyline.

A graffiti Mecca welcoming artists from around the world.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

America's greatest forgotten garden and the former stomping grounds of Son of Sam.

An homage to everyone's favorite prehistoric cartoon family.

A once grand hotel is being retaken by the wilderness it once capitalized on.