Bohol's mysterious brown hills.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

A monument celebrating the idea of reaching inaccessible places.

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

A historic presidential getaway on the continental United States' southernmost island.

"We Seceded Where Others Failed."

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

Former villa and estate of James Deering developed to preserve native tropical forests.

A mysterious castle built as a monument to lost love.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

Bat house that has only ever housed bat for one night; they all flew away and never came back.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The second oldest continuously operating bar in Louisiana.

A snapshot of the city's fascinating voodoo culture.

A church of bones, decorated with 40,000 human skeletons.

A museum of alchemy and a basement laboratory all housed in an ancient building in a Gothic tower.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

The "Prussian Versailles" that is as glorious today as when it was built.

Metro station with a claim to rock n' roll fame.