Castelinho de São João do Estoril — the ghost of the blond girl on Portugal's Riviera

The Castelinho de São João do Estoril, a small castle-like building on the Portuguese Riviera near Lisbon, is said to be haunted by the ghost of a little blonde girl. The building, which has served various purposes over the years, sits near the coast in the upscale resort town of Estoril. The girl's ghost has been described by multiple witnesses as a child of approximately 8-10 years old with blonde hair and a white dress, who appears in the windows and on the grounds of the building. She has been seen playing alone, seemingly unaware of modern observers, before fading from view. Some witnesses describe hearing a child's laughter near the building, particularly in the evening hours. The identity of the girl and the circumstances of her death are unknown, but the consistency of descriptions across different witnesses over the years has given the legend durability. Estoril, once a refuge for exiled European royalty during World War II, has a cosmopolitan character that makes ghost stories less common than in Portugal's rural interior. The Castelinho's haunting stands out against this backdrop — a small, poignant mystery on one of Europe's most glamorous coastlines.