Lignumvitae Key Botanical State Park 
U.S. Highway 1
Islamorada, FL 33036
305-664-2540
https://www.floridastateparks.org/parks-and-trails/lignumvitae-key-botanical-state-park
State Park: Birding, Fish, Hike, Picnic, Walk, Water Sports
To step ashore here is to take a step back into the past. The Matheson House, built in 1919, has changed little over the years. A windmill supplied power; fresh water was provided from a cistern which filled by rain falling on the roof.