(Source: Pinterest/Kelsey Truex via Foursquare)
3. Hotel Monte Vista in Flagstaff, Arizona
The creepy Hotel Monte Vista in Flagstaff, AZ was built way back in 1926. Nothing truly macabre happened until the 1940s, when two prostitutes staying in room 306 were physically thrown out of the third floor window.

After that, ghosts began to roam the halls, including an invisible bellboy who is said to knock at doors and announce "Room service!" Freaky. In addition, in the '80s a long-term boarder at the hotel was found dead in room 220. He is now known for his bizarre habit of hanging raw meat from the chandelier. Be sure to book your stay today...?

Image via Pinterest | Foursquare.