Koreshan State Historic Park is located in Estero, Florida (Lee County). I went here on 12/28/2014.
According to the Ghosttown website,
The remains of an unusual pioneer settlement can be found on the banks of the Estero River in Lee County. In 1884, Cyrus Teed came from Chicago to start a new religion and a new way of life called “Koreshanity”. He called it a “New Jerusalem”. Teed felt that God was both Male and Female and that the Earth was enclosed with all the stars and planets and we lived inside. By 1893, the colony began and flourished until the death of Teed in 1908. The group declined until the four remaining inhabitants gave the property to the state in 1961. By Mike Woodfin