The oldest bar in Missouri is hidden within a limestone brewery cellar more than 50 feet underground.

The oldest university museum west of the Mississippi retains its 19th century feel.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

The first declared National Monument in the United States.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

Just a man taking his prehistoric pet for a stroll.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

This erect, phallic geological spire wasn't always named so domestically.

An experimental, automotive replica of Stonehenge.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The show pony of cave systems, Fantastic Caverns manages to live up to its name.

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

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

A museum of the dime museum that features weird entertainments of yesteryear, from feejee mermaids to flea circuses.

A theme park attraction designed to turn your children into LARPers.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

The largest source of fossilized insects anywhere.