This enchanting Victorian estate was home to the world's first hydroelectric power generator.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

Wonderfully preserved Victorian factory, complete with a preserved steam powered engine house.

With lush plants and flowers, huge trees, ponds, and hidden monuments, this place feels a bit like discovering Narnia.

This Roman amphitheater is said to be King Arthur's legendary Round Table.

An ancient Roman altar named after Robert the Bruce.

An eccentric aristocrat brought these Australian natives to their current Scottish home.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

This WWII aircraft museum presents its wrecks like taxidermy, complete with recreations of the crash sites.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

A collection of haunted objects and macabre oddities under one roof.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

A blacklight mini-golf fever dream pays tribute to the iconic rock band.

Originally built as a promotional giveaway, this suburban house was designed to be an IRL version of the Simpson home.

This former lieutenant governor's home is brimming with curiosities.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

A medieval church built up to defend its village.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

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

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.