Claim: Crandon Park, the setting for The Demon in the Sun Parlor, is an urban park in Jacksonville, Florida that is connected to Rickenbacker Causeway.
Evidence: Crandon Park is an 808-acre (3.27 km) urban park in metropolitan Miami, occupying the northern part of Key Biscayne. 
6747 Crandon Boulevard
Key Biscayne, Miami, Florida, United States