Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

In this century-old literary safehouse, print is alive and well.

Its buzzing collection honors vibrator history.

This 28-foot-tall milk can contains one of the most whimsical ice cream parlors in town.

A collection of over 15,000 zines works to preserve DIY publishing culture.

A giant scrap metal troll rests his hands on top of a dilapidated building covered in graffiti.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

An eccentric priest's tribute to George Washington, this chapel tells the story of the American Revolution.

A curious building honoring past and current members of a historic musical comedy troupe.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

The oldest of only three existing statues of the great novelist stands in a city he did not care for.

Hidden behind West Philadelphia rowhomes is a haven for migratory and local bird species both ordinary and rare.

Where America’s first doomsday cult awaited the end of the world.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

The "Seinfeld" diner.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This shallow cave got its name from copious amount of human bones found inside.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

"The Most Boring Road in the State."

This lone tree and dramatic sandstone outcropping are so beloved by Michiganders they can be found on one of the state’s coins.