Abraham Lincoln's likeness rests at the top of this giant totem pole.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

This lagomorph-obsessed Route 66 emporium is home to a giant jackrabbit that sits in a bunny graveyard.

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

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

The red brick house where the father of rock 'n' roll wrote some of his classic hits.

The largest riverfront opening cave in the Ozarks.

A sculpture of a giant man escaping from the depths of the Earth.

The only mill in the state that features a covered bridge.

A 40-foot waterfall flows into this unique natural swimming hole.

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

This small turbine mill along Rocky Creek was built in 1928

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

Now nearly abandoned, Kaskaskia was once the capital of Illinois and one of the most important towns on the upper Mississippi.

The deepest spring in Missouri.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

The world's second largest rocking chair is found on Route 66 in Cuba... Missouri.

A subterranean haunt where wine and homemade biscottis are always on the menu.

These pink granite water slides are the result of millions of years of erosion.

In the St. Francois Mountains in the Ozarks at 1,772 feet above sea level, Taum Sauk Mountain is the highest (and possibly oldest) peak in Missouri.

Some of the oldest exposed rock formations in the United States.

A museum dedicated to man's boldest venture.

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

Indiana's oldest sternwheel paddleboat has been plying the placid waters of Webster Lake for 90 years.