CASSADAGA, Fla. – It’s a small town in Volusia County known as the “psychic capital of the world.” “At one point, nobody used to come here. Then the [Cassadaga] hotel started doing the haunted house.

Some see Joshua Tree as just another desert landscape, but others swear it is a spiritual vortex with an energy unlike anywhere else. Its twisted, otherworldly trees and massive boulders have drawn ...