The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

This former Union fort commands a fine view of downtown Cape Girardeau and the Mississippi River.

Odd castle-like structures for collecting water sticking out of the Mississippi River.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The oldest landmark of Toronto is a testament to shifting sands.

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

These strikingly barren, rolling red hills were caused by bad farming practices.

The eccentric and colorful pavilions of Tower Grove park are a beloved and overlooked symbol. 

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The oldest soda fountain in St. Louis has been serving up treats for more than a century.

Browse through roughly 130,000 titles in the world's largest independent video rental store.

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

The world's largest collection of the world's largest objects is in one small Illinois town.

You have to love a museum with a truly dedicated focus. A focus on Superman, for example.

Two Ming Dynasty lion statues guard the entrance to the journalism school.

The iconic remains of the original Academic Hall that burned down in 1892.

This 1854 courthouse along the Mississippi River has a storied history.

Even with its slightly risible name this colossal cross is still able to inspire awe.

Erosion and time have created a naturally-formed water park.

Giant granite rocks standing end-to-end like a train of circus elephants.

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.

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

During the 19th-century, this park was a vital trading fort.