In the 1800s, religious camps were popular on the island. As popularity increased, this open-air wrought iron structure was built, which is believed to be the largest of its kind in the US. With seating for 3,000 people and exquisite woodworking and stained glass, it is truly a magnificent sight. In 1979, its centennial year, it was named to the National Register of Historic Places. The Tabernacle is used today for concerts, Sunday church services, community sing-alongs and special ceremonies.