Blue Hole of Castalia: Includes recollections on the bottomless pond.
Castalia Branch Library: A subdivision of the Sandusky Library, provides location and operating hours.
Castalia Local News: Topix.net: Local, regional, and statewide news collected from diverse sources on the web.
Groton Fire Deparpment: Presents overview of the department, personnel, and equipment.
Margaretta Township Fire Department: A department that provides fire, rescue and EMS services to the residents of Margaretta Township and the Village of Castalia. EMS is provided at both BLS and ALS levels.