Sarah Winchester's 160‑room mansion in San Jose, built over 38 years starting in 1884, is famous for its maze‑like design with staircases to nowhere and doors that open onto walls. According to the estate's history and long‑standing legend, she continually added onto the house to appease spirits of those killed by Winchester rifles. The property is now a tourist attraction that markets itself as one of the world's most haunted houses.

The retired ocean liner RMS Queen Mary, permanently moored in Long Beach, operates as a hotel and tourist attraction. For decades the ship has been associated with ghost stories, and official tours market it as a haunted attraction with reported paranormal experiences in its engine room and former swimming pool. Paranormal investigations and themed tours are offered to visitors.