The vast, legendary catacombs hold secrets much stranger than stacked bones.

The video game-themed street art first popped up in the French city.

Former self-sufficient mental institution now a planned community.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

An enormous roadside pan tells the story of a battle for pie glory.

A humble ode to the heroic air rescue efforts of the United States Coast Guard serving on the Great Lakes.

A 12-foot sculpture serves as a constant reminder of the importance of protecting and restoring the Boardman River.   

A lonely stone-sided terminal stands next to a grass airstrip on Michigan's Leelanau Peninsula.

The rusted remains of an ill-fated freighter lie just off the coast of South Manitou Island in Lake Michigan.

This tribute to a local man towers within a quaint lakeside park.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Hidden beneath the waters of Lake Michigan rests a perfectly intact ship from the early 1900s.

The secret skeleton of a murdered nun was discovered in this church basement, but the scandal doesn't end there.

A crumbling mountain resort that looks like it was abandoned in an instant.

The artwork honors those who are dedicated to preserving the beautiful Michigan peninsula.

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

A preserved stump is all that remains of the once-mighty hardwood.

The first spinning jail built in the United States is the only one that still turns.

A flamboyantly decorated bridge signals diversity and fellowship at the entry to Indianapolis' Broad Ripple Village.

Nature and art meet in this curvy creation

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

The largest historic preservation organization in the United States.

This stately clubhouse has showcased German-American culture for over a century.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.