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

This spot in St. Louis, marked with a simple sign, has seen more pro baseball than just about anywhere else in the world.

A notorious Route 66 eatery once frequented by Al Capone.

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

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

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This former small town was destroyed not by the motor oil it sprayed the ground with but by the toxic waste that was added.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

This 40-foot fowl marks the so-called "wild goose capital of the world."

Famous church recognized for both its unique design and disciplined monks that live according to the Benedictine discipline.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

A wax effigy of St. Valentine hides one of the saint's relics.

The maximum security facility was once thought to have "the bloodiest 47 acres in America."

Home with Gothic windows featured in a famous painting.

Like Stonehenge, but with boats and oodles more charm.

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

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

A museum devoted to osteopathy and its creator, Andrew Still.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.