The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The phrase "the shot heard around the world" was coined after a skirmish at this bridge.

A plaque marks a former safe house on the secret route, now hidden next to a McDonald's.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

The site of the Wellington avalanche, one of the America's worst railroad disasters.

Eternal resting place of the grave robber and murderer who served as inspiration for many of cinema’s famous madmen.

What is it about mushrooms that makes people wish they lived inside of them?

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

Illegal drag racing two stories beneath Chicago’s streets.

A display of magnificent stained glass windows is the first exhibit of its kind.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A relic of the Cold War in Chicago.

This folk art wall claims to be the world's one and only memorial to the bygone age of hippies.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

Moving, mind-blowing metal sculpture work of an outsider artist.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

One of Chicago's last seafood smokehouses perfects a dying breed of fishcraft.

A giant Troll lurks under one of Seattle's oldest bridges.

This legendary urban waterfall creates a dazzling display of rainbows.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.