The Plains Hotel, Cheyenne, Wyoming, USA

The Plains Hotel is an imposing building in Wyoming's capital city. It opened in 1911, offering one hundred guest rooms and five elevators - no small feat for a hotel of that time, even in a major city.

It's no surprise that the hotel was a destination for honeymooning couples. One new bride, called Rosie, checked in with her husband on what was to be the last trip of her life.

Rosie's husband (no Prince Charming, he) wandered down to the lounge one evening for a drink or two. Hours later, when he hadn't returned to their room, Rosie found him still in the bar, getting friendly with a prostitute.

Rosie's new husband, with his new friend, left the bar and went to the prostitute's room on the fourth floor. Rosie followed, and with her husband's gun, shot the prostitute, her husband, and (back in the honeymoon suite) herself.

The ghosts of all three parties to the murder/suicide have been seen by staff and guests. Rosie, wearing a blue gown, walks the hallways of the hotel. Laughing and crying have been heard from the room that was once hers. Her husband is seen on the fourth floor, and - oddly - the basement. The prostitute is seen on the second floor.

Kewaunee Inn, Kewaunee, Wisconsin, USA

The Kewaunee Inn (once the Karsten Hotel) is close to Lake Michigan, Green Bay - and the supernatural.

The building turned 100 years old in 2012. In 1966, work was done on the hotel, and it seems that this operation brought out the spirits of three people once attached to the hotel - a former owner, his grandson, and a maid.

Why the maid (Agatha Struck) haunts the inn is a mystery; she was not an owner, and she didn't die on the premises. Rumor has it that she was in love with a former owner; if so, given the fact that they both haunt the place, she may be happy now. She has been seen performing her old duties, such as sweeping the halls. One guest who stayed in 310, Agatha's old room, watched, freezing, as a filmy wraith floated through the wall. She is known to move objects, especially when the inn was renovated in 1984; Agatha showed her displeasure by hiding tools, opening and closing doors, and turning lights on and off.

William Karsten, Sr., has been seen having an ethereal beer in the bar. Like Agatha, he moves things (in his case, furniture) when upset; he also causes a foul odor to show his unhappiness.

Billy Karsten, William's grandson, died of meningitis at the age of five. Living children have played with a little boy on the second floor, a boy who looks strikingly like the photo of Billy. He has also been heard running down the hall to his grandfather's room.