Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

This museum started as a collection of Manhattan Projects and continues to add exhibits as they are declassified.

Quite simply the largest tree in the world (by volume).

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

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

An alley covered with 20 years of bubble gum.

A fitting attraction for the corn capital of the world.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

This simple home was the beginning of a long journey for the iconic Western film star.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

A hot dog stand where the heads are just as hot as the dogs.

Home to a protest movement, a bombing, and a dramatic change in labor history.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

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

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

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

First planned industrial community in the United States.

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

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

This California estate was either haunted by ghosts or the Marx brothers.

Megachurch turned Catholic church comprised of 10,000 glass panes.

Oldest building in California still in use.