Don't miss North Carolina's only known natural gravitational anomaly. Mystery Hill has grown during the past 70 years to include many different family-friendly attractions. This gravitational anomaly, believed to be caused by the dense iron deposits in the hillside, draws visitors from across the world. Combo ticket options make it even easier for families to experience all of the attractions including: a hands-on Science Center, Giant Bubbles of Bubblerama, 265,000 Native American artifacts, Irene Mullins Artifacts Collection, Old-Time photo parlor, unique gift shop and the historic home of the founders of Appalachian State University.