Hidden in the hills of Western Pennsylvania lies one of the best-kept ghost towns in America that you can legally visit.

The way that light hits a stained glass window on a specific day is one of many "clues" to a mysterious treasure.

The most isolated mailbox in America lets desert travelers record their passing.

A painfully obvious spy house sits right across the street from the Russian Embassy.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Where condemned pirates met their grisly end at the gallows on the River Thames.

Thirty creepy ghosts now inhabit this decaying 14th-century church.

The Ranger’s House exhibits fine mementos collected by Sir Julius Werner during the course of his life, including this infamous pendant.

Vermont's hills are alive with the sound of music at this historic hotel.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

According to legend, this tomb holds the secrets to time travel.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

This carved stone slab marked the grave of a local dragon slayer, who makes a killer pie.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

A Jenga-style cylindrical tower of books that appears to go on forever.

According to folklore, Vermont's slanted windows were installed to keep witches from flying into the house.

Where Mary Shelley’s "Frankenstein" and John William Polidori's "The Vampyre" were born.

In Twickenham sits a small whitewashed castle that inspired Mary Shelley's 'Frankenstein.'

The building that inspired Shirley Jackson's "The Haunting of Hill House."

This 1.5 million-gallon water tower inspired Stephen King while he was writing "It."

The remains of a grand castle that may have inspired Bram Stoker's Dracula.