A castle built by an eccentric medieval enthusiast in rural Ohio.

Rare recess caves fill this unbelievably beautiful Ohio park.

The largest earthwork effigy in the world.

A collection of Witchcraft artifacts and occult paraphernalia started by the leader of the Long Island Coven.

Take a drunken tour inside the world's largest known geode.

Where beautiful signs live on forever.

Two hula hoops appeared on the tree after a storm, and the collection kept growing.

The notorious couple camped at this site after a bloody shootout with police.

An eclectic assortment of medieval architecture in a small Iowa town.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

A warning to the weak-kneed: This narrow bridge does its swinging eight stories high.

A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

The history of funerals and funerary customs.

In one Chicago park, a trio of werewolves are waiting to devour their fallen brethren.

A European-style bath house in Chicago.

The final resting place of the hero of Air Florida Flight 90 known as "the man in the water."

This small-town opera house has appeared much more in national culture and history than its charming setting might suggest.

A source of civic pride, though the reason for its construction is unknown.

This lush 12-acre site was once named the finest Japanese garden in North America.

A collection of 11 million buttons illustrates the human toll of the Holocaust.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

One of the first historical sites of an alternative universe was installed in the town of Paris, Illinois—which is now home to an annual spelling bee of Kcymaerxthaereal words.

Roses and other fascinating flora fill this garden built to commemorate Britain's immortal Bard.