The Creepiest Places in All 50 States

Open from 1882 to 1971, this National Historic Landmark in Birmingham was once the world’s largest manufacturer of pig iron, though this achievement came at a cost. Working conditions at the plant were miserable, particularly from 1900 to 1906 under the reign of graveyard shift foreman James "Slag" Wormwood. Wormwood pushed his workers to take dangerous risks to speed up production, and 47 workers died during his reign (while many others were injured). The foreman himself died on site, and his spirit is said to have lingered. Workers complained of an "unnatural presence" at the plant, as well as being pushed from behind or told to "get back to work" by a mysterious voice. All in all, more than 100 reports of suspected paranormal activity at Sloss Furnaces have been recorded by the Birmingham Police.

Established in 1898, the Red Onion Saloon in Skagway was a popular brothel during the Klondike Gold Rush, and today it’s said to be haunted by one of the women who worked there. Known as Lydia, the resident ghost has reportedly been spotted running down a hall into a room once occupied by the madame. Others claim to have smelled her perfume or to have experienced extreme cold spots. The Red Onion Saloon offers a Ghosts and Goodtime Girls Walking Tour, which gives guests a closer look at the establishment’s history.

Yuma Territorial Prison held more than 3,000 murderers, thieves and other criminals during its 33 years in operation from 1876 to 1909. More than 100 people died on the premises. Guides have reported feeling a chill near cell #14, where a prisoner named John Ryan committed suicide. Another unsettling spot is known as the "Dark Cell," where disruptive inmates were held in isolation. While no one is known to have died in the Dark Cell, two inmates were transferred to an insane asylum shortly after being released. Visitors to Yuma Territorial Prison can get a closer look at the cell blocks, guard tower and more.

Located in Eureka Springs, The Crescent Hotel was one of America’s most luxurious resorts when it opened in 1886, but it closed in the 1930s due to tough economic times. In 1937, it was purchased by Norman Baker and converted to Baker's Cancer Curing Hospital. Baker had no medical training, and his supposedly groundbreaking cancer treatments were, in fact, a scam. Today, the hotel has been restored to its original grandeur, but Baker’s patients and other spirits are still said to haunt the property. Common ghost sightings include Theodora, a patient who fumbles for her keys outside of room 419, and Michael, an Irish stonemason who fell to his death while building the hotel. Nightly ghost tours end at the morgue — still intact from the hospital and said to be a hotbed of paranormal activity.