Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

One of the last remaining covered bridges in the region.

The ruins of a resort and casino sit on the banks of this blue hole spring that pumps 70,000 gallons of warm, clear water every minute.

A massive tribute to this small county's top agricultural product.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

The Midwestern United States' tribute to Michelangelo is a foam statue sprayed with gaudy gold paint.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

One of the greatest boxers and humanitarians to ever live chose his hometown as his final resting place.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.

Marine fossils from the Devonian period are exposed at this park.

According to legend, this is the site where a blind horse killed a local witch.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

This uniquely designed bridge served as the city gate for Comacchio.

One of the oldest still-working clocks in the world sits on an ancient tower.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Roman politician Herodes Atticus built this nymphaeum to honor his wife, whom he may have murdered.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

This site marks the oldest known settlement in Campania, inhabited around 9,000 years ago.

Every January 6, young men dive into Spring Bayou in search of a cross and a year's worth of maritime blessings.

In this Florida couple's cottage, nearly every surface—inside and out—is covered in mosaic artwork.

Loyal fans of one television's most famous painters still come to pay their respects.