The state purchased the castle and grounds in 1978, adapting them for use as a state park and opening them to the public. The water tower was repaired in 2004, with a new roof installed. Although the castle walls were stabilized in the 1980s, a new survey in 2016 determined that portions of the ruins including its arches were seeing mortar and stone failure with the potential beginning of collapse. Some areas have been closed off from the public. The ruins can be seen from an observation point across from the park office.