The Sapulpa Historical Museum in Sapulpa, Oklahoma, has been the subject of reports of paranormal activity, including items falling, doors locking on their own, and unexplained voices being heard. These accounts have been reported by visitors and paranormal investigators, with some stories suggesting the museum's history or the town's unique geological features, such as underground aquifers and limestone, contribute to these experiences. Reports describe objects falling on their own within the museum. Doors have been observed to lock or unlock without anyone touching them. There are reports of disembodied voices or sounds being heard. The museum, like many old buildings, may contain a rich history that could be associated with alleged paranormal activity. Some theories suggest that the presence of underground aquifers and limestone in Sapulpa may play a role in fostering the paranormal.