The blood-soaked ruins of the castle where the murderous Blood Countess was walled in alive.

One woman's Viking Castle on Lake Tahoe.

These once-beautiful historic graveyards are set against the barren Virginia City hills.

The final resting place for the remains of 143 Habsburg royalty.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Hungarian mummies in beautiful painted coffins.

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

Romania's triumphal arch looks out over Bucharest.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Macabre astrological automaton clock dating to the late 1400s.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

A terrific purveyor of natural history objects and curios.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The seamy, underground secrets of Portland's criminal past.

An emporium for the weird, creepy, rare, and just plain gross.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

An extraordinary mixture of natural beauty and man-made phenomena.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.