This unusually circular centenarian barn became a Route 66 icon.

Coastal dunes, site of buried Egyptian movie set and former utopian colony.

An alley covered with 20 years of bubble gum.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

Home to a forest of whimsical pygmy Coast live oak.

The final resting place of up to 6,000 Confederate soldiers, the largest mass grave in the Western Hemisphere.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

A relic of the Cold War in Chicago.

This old steel industry company town has a tradition of parking cars on the sidewalk so people can walk in the narrow streets.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

The unbelievably opulent home built for an infamous newspaperman.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A hotel and restaurant serving as the mecca of kitsch.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Huge abstract sculptures of the Puerto Rican Flag.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This modest post office sits on the site of H.H. Holmes' famous murder castle.

First planned industrial community in the United States.

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

This museum celebrating the almighty dollar lets visitors literally stand in the shadow of a million bucks.