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

One of the deepest springs in Missouri.

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

Buy a token from the liquor store and you can make this beast spew flames on command.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

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

This is not your typical jungle gym.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.