Cassadaga is an actual community about one hour northeast of Orlando and has been named "The Psychic Capital of the World" due to the large number of mediums who live there. Check out more information about Cassadaga.
The Cassadaga Hotel is actually Flamingo Gardens, a tropical garden located in South Florida.
It took four different takes to shoot the scene where Longworth's car is almost driven into the canal. During the last take, the car actually almost fell in. If not for safety harness strapped securely to the vehicle by the special effects team, we might have had some very expensive damage.
The explosion at Patrick Zelman's house was shot in one take. The house was completely unharmed and all the ensuing destruction was actually created by the decorating department.
Production notes courtesy of Marc Weinstein.