Gripsholm Castle (Gripsholms slott)

Gripsholm Castle (Gripsholms slott) is a royal castle begun in 1537 under King Gustav I Vasa, located on the shores of Lake Mälaren in the locality of Mariefred within Strängnäs Municipality, Södermanland. It served as a royal residence and stronghold from the 16th century and later became a museum; it remains part of the Crown palaces. The site is noted for housing a national portrait collection and for its preserved interiors and exterior fortifications, which appear in archival photographic collections. The supplied research material contains no explicit first‑hand accounts, investigative reports, named spirits, or detailed ghost stories tied to Gripsholm Castle itself. A tourism article that lists haunted houses in Sweden mentions a nearby historic inn (Gripsholms värdshus) across from the monastic grounds, but that source excerpt does not assert that the castle is haunted, and no paranormal phenomena are documented in the provided excerpts. The castle does appear in Swedish popular culture (for example, as a plot location in a 1991 animated feature), which reflects its cultural recognizability rather than any supernatural claims. Because the supplied sources do not substantiate specific paranormal claims for the castle, this entry emphasizes documented history, cultural significance, and the absence of verified paranormal documentation in the provided material. Further folklore or paranormal research would require consulting local Swedish‑language folklore collections, oral histories from Mariefred, or dedicated ghost‑lore compilations not included among the supplied sources.