This nine-story building can be played like an instrument.

This airfield is home to a number of retired vintage planes in various states of disrepair.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Huge winged monument in the United Kingdom.

A sculptor's dream castle turned fantastical ruin.

The oldest surviving botanic garden in the United States.

A rare view of a preserved Victorian science museum.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

The world's largest collection of fine-scale miniatures and one the nation's largest collections of antique toys.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Admire the art and then buy a raccoon skull cleaned by flesh-eating beetles.

These curious caverns have been home to mushrooms, gangsters, and disco.

A Foundry on a Sleepy Street.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

One of the coolest murals in Minneapolis.

This taxidermic smorgasbord was co-created by an artist poached from the Museum of Natural History.

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

A Perpetually Under construction Park.

Hub of Scandinavian culture in a Minneapolis deli.

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

A museum dedicated to the exploring past, present, and future innovations.

20,000 pieces in a Frank Gehry-designed building.