Authorities have warned people to stay away from the Decebal Hotel -- because construction was taking place on the 150-year-old building. What they didn't warn people about was the ghost. The spirit of a tall woman in a long white frock has long been reported at the spa. The hotel in Romania is rumored to hide ancient Roman treasure, and the ghost, it is said, appears to protect it from treasure hunters.

Only anecdotal evidence for this ghost existed until 2008 when 33-year-old Victoria Iovan snapped this photograph, which indeed seems to show the ghostly image of a tall figure in long white garb. "I photographed my boyfriend in the hotel," said Iovan. "Back home I was shocked to see another woman's shadow in the picture. She looked like a priestess in long white clothes."

This interesting photo was taken sometime around the year 2000 in Manilla, Republic of the Philippines. According to The Ghost Research Society, two girlfriends were out for a walk one warm night. One of them entreated a passing stranger to photograph them using her cell phone's camera (hence the low-resolution picture). The result is shown here, with a transparent figure seeming to tug on the girl's arm with a firm if friendly grip.

Without further information on this photo, we have to admit that the ghost could have been added with image processing software. But if it's genuine and untouched, it certainly qualifies as one of the best ghost photos.

Several unnerving instances of ghost and poltergeist activity were reported by the management, staff, and customers of the Godfather's Pizza restaurant in Ogden, Utah in 1999-2000, prompting an investigation by Utah Paranormal Exploration and Research (UPER). Phenomena included:The sighting of several spirits, including those of a man, a woman, and two boysA jukebox that played by itself, even when unpluggedA tile floor that inexplicably bulged up as high as ten inches, then leveled itself; a later examination showed nothing out of the ordinary beneath the tile and the concrete was intactAs many as 40 fluorescent light tubes flew out of their boxes and smashed on the floorMysterious whistling was heard from the kitchen several times.UPER's investigation found that the restaurant might have been built upon a very old pauper's field -- a cemetery for the poor. It also resulted in this photo, taken by Merry Barrentine, UPER's general manager, in 2000. This misty apparition was actually seen with the naked eye for a few seconds as it materialized in the middle of the room.

These two photos were taken in 1988 at the Hotel Vierjahreszeiten in Maurach, Austria. Several vacationers gathered for a farewell party at the hotel and decided to take a group photo. One of the party, Mr. Todd, set up is Canon film camera on a nearby table and pointed it at the group. (The table is the white band at the bottom of the photos.) He set the self-timer on the camera and hurried back to the table. The shutter clicked and the film wound forward, but the flash did not fire. So Todd set the camera for a second shot. This time the flash fired.

The film was later developed, and it wasn't until one of party members was viewing the photos that it was noticed that the first (non-flash) photo showed a somewhat blurry extra head! (In the sequence above, the second (flash) photo is actually shown first for the sake of comparison.) No one recognized the ghostly woman, and they could not imagine how her image appeared in the picture. Besides being a bit out of focus, the woman's head is also too large compared to the other vacationers, unless she is sitting closer to the camera, which would put her in the middle of the table.

The photo was examined by the Royal Photographic Society, the photographic department of Leicester University, and the Society for Psychical Research, all of which ruled out a double exposure as the cause.