One of America's first dinosaur parks gives a window into Depression-era paleontology.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

The world's largest Holstein cow.

A winged-helmed, sword-brandishing tribute to German Americans.

A town honors its legacy of traditional American Indian pipe carving with one gigantic pipe.

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

This sacred space and gathering spot for the Wyandot Nation has been the surrounded by controversy and confusion.

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

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

A Mormon place of exile in Missouri.

This otherworldly church spire reaches up toward the heavens.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

One of the world's earliest skyscrapers.

The large rock formation where the Shawnee prophet Tenskwatawa stood and encouraged his warriors during the Battle of Tippecanoe.

Historians and hobbyists head to this former French outpost for the annual Feast of the Hunters' Moon.

An unknown number of cholera victims are buried in two nondescript graves.

Purdue students would lean over this iron fence to skirt campus rules against smoking and courting.

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

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

This museum located in the "Corn Cob Pipe Capital of the World," chronicles the history of cob pipe.

A mysterious light of unknown origin on the backroads of Missouri.

Native Americans built this circle of stones, which was used to predict astronomical events.