What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Walk the whole Mississippi River!

The seventh largest spring in the world.

One of the deepest springs in Missouri.

A historic, scenic mill that was forced to close due to overlogging.

An average of 33 million gallons of water pour out of the collapsed cave at the heart of this spherical spring.

Once an ambitious nature spa, these forest ruins now provide a serene monument to failure.

Around 50 million gallons of water flow from this spring every day.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

It is the only marker for one of the most famous hate crimes in American history. There are no other memorials for him in the entire state.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Crumbling hotel echoes with the sounds of the '30s.

This Texas home and garden was the masterpiece of a British portrait painter.

A peculiar forest that was handcrafted for government experiments.

This little slice of old Jerusalem in Oklahoma is the evolution of a 90 year old passion play.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

Away from the crowds of fishing enthusiasts, take a hike deep into the woods and journey into an eerie darkness.

European castle ruins in an American state park are actually the product of death and grief.