Summary: Wolf House was nearly complete in 1913 when it was destroyed by fire. The Jack London park was more fortunate last month. Wolf House was nearly complete in 1913 when it was destroyed by fire. The Jack London park was more fortunate last month. The ruins of Wolf House, designed as a 26-room mansion, are one of the attractions at the Jack London State Historic Park. The ruins of Wolf House, designed as a 26-room mansion, are one of the attractions at the Jack London State Historic Park.