About this landmark

From the state:
Opened in 1941, The Mystery Spot is the first and most significant example of its type in California, a "tilt-box" or "gravity house" roadside attraction that gained popularity in the mid-20th century. The Mystery Spot was designed and built by George Prather and managed by Prather and his son Bruce. The site became a popular destination and stopping point for tourists and locals, and still operates today in its original location and design.