Lt. Christopher Sullivan Park is one of the New York parks in thicket's catalog. thicket is a field guide to the parks near you: it maps the ones you have never noticed, gives you a reason to actually go, and keeps a record of where you have been.
Where it is
Lt. Christopher Sullivan Park is in Nassau County, New York. Its approximate coordinates are 40.72512, -73.46192.
Check in at Lt. Christopher Sullivan Park
thicket verifies you are actually here by GPS when you check in, so a visit means you went. Checking in builds a streak, earns achievements, and fills in your map of the places you have been.