The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

The oldest surviving botanic garden in the United States.

America's first serial killer rests in anonymity.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Venue for strange sideshow displays and musical acts.

Rainbow-hued local gem in Venice.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This cemetery features modernist statues as strange as its name.

An eccentric collection of antique items shares space with a prop-quality witchcraft museum.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

A beautiful but toxic fountain of mercury.

The only intersection in America where the buildings on all four corners were built pre-Revolutionary War.

The world's largest kaleidoscope, designed by a 1960s psychedelic artist.

100 massive sculptures in the Hudson River Valley.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

Beautiful antiques and obscure engineering artifacts trace the evolution of phones from rare luxuries to ubiquitous.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

This massive underground salt mine now holds a sci-fi theme park in its depths.

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

These warring psychedelic crags commemorate an unsuccessful military operation.