Wellesley Island State Park:
https://parks.ny.gov/parks/wellesleyisland/details.aspx
This is the largest camping complex in the Thousand Islands region with 432 campsites. Within this rustic paradise, fishing is excellent--particularly for perch, smallmouth bass, pike, and muskie. To accommodate boaters, the park has a full-service marina and four boat launches. A sandy beach on the river offers
great swimming and sunbathing and there is a Camp Store, Laundromat, Arcade and the 9-hole Wellesley Island State Park Golf Course on the Island. One of the main attractions of the park is the Minna Anthony Common Nature Center which includes educational displays, gift shop, varied habitats such as wooded wetlands, 3 miles of shoreline and open granite outcrops, and miles of trails for hiking, cross-country skiing and snowshoeing. The Nature Center provides educational and recreational programs for all ages. One special feature at the nature center is the 1/4-mile accessible trail that includes access to picnic tables and the seasonal butterfly house. https://parks.ny.gov/environment/nature-centers/2/details.aspx
Dewolf Point State Park:
https://parks.ny.gov/parks/dewolfpoint/details.aspx
Is a park that as a cabin colony, camping area, stone gazebo and dockage for boats on the Lake of the Isles in the St. Fishermen and nature lovers appreciate this small park's rustic beauty. Mary Island State Park:
https://parks.ny.gov/parks/maryisland/details.aspx
This small island park comprises 12 heavily-wooded acres with steep rocky outcroppings offering spectacular views of the Canadian shore or the shipping channel. The park has a picnic area and several foot trails. Access is by boat only boat rentals are available at nearby NY State Parks.