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

A historic hotel library in Indiana hides more than a few secrets on its shelves.

This elaborate estate contains a stunning marble aviary, a sunken conservatory, and a magnificent music room with a two-story pipe organ.

A modern-day wunderkammer dedicated to Indianapolis history, Afrofuturism, and musical vibrations.

A turn-of-the-century architectural marvel built on healing mineral springs and salt licks.

This candy shop has been serving up sweets to the Louisville area since the 1850s.

More than 3,200 cookie jars line the walls and shelves of this little shop and over 1,000 salt and pepper shakers

Enjoy classic musicals with a home-cooked meal at this former staple of American social life.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

A medical facility that has been kept frozen in time.

The longest navigable underground river in the United States is home to countless blind and albino animals.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

Town of spiritualists and mediums in Florida.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Where manatees are the snowbird vacationers in these balmy Florida springs.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

This antique rail car has been reborn as an urban cafe.

This 16th-century monastery was founded to cloister the daughters of wealthy local families.