Sound of the Natural State was created in 1909.
Natural Bridges State Beach was created in 1933.
Azalea State Natural Reserve was created in 1943.
Volo Bog State Natural Area was created in 1970.
Connecticut State Museum of Natural History was created in 1988.
Mount Jefferson State Natural Area was created in 1956.
Bucktail State Park Natural Area was created in 1933.
Tryon Creek State Natural Area was created in 1975.
Lost Maples State Natural Area was created in 1979.
Kangaroo Lake State Natural Area was created in 2002.
Armstrong Redwoods State Natural Reserve was created in 1934.
Cache River State Natural Area was created in 1970.
Beaver Creek State Natural Area was created in 2010.