The palatial McDonald's that inspired Wesley Willis.

A little-known subterranean street runs under some of the best-known buildings in Chicago's River North.

This memorial plaque remembers a strangely shallow maritime disaster known as "Chicago's Titanic."

A goddess-topped water fountain in Chicago was created thanks to the dreams of a thirsty newsboy.

Illegal drag racing two stories beneath Chicago’s streets.

The only surviving prototype of Buckminster Fuller's revolutionary car.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Perhaps the world's only gas station inspired by a political scandal.

In Washington's Yakima Valley lies a town "where dinosaurs roam."

A giant donut stands as a popular symbol of Los Angeles iconography.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

This municipal playground was co-created by the father of one of the most playful characters ever.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

A locomotive made from 185,000 bricks celebrates the town's pioneering railway history.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This man-made mound monument was built out of soil from all across the Polish empire.

Real bones which are said to have belonged to a Polish dragon.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

This downtown Dallas art installation is always on the lookout.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

A little sculpture with a large wardrobe.

Climb inside an iron crystal magnified 165 billion times its normal size.