Admission to Sherwood Island State Park will be free on Saturday and Sunday, July 26 and 27, as part of a "Free State Parks Weekend" declared by Gov. Dannel P. Malloy.

The Westport park will be open from 8 a.m. to sunset, and use of the beach and all other facilities will be without charge.

Sherwood Island, Connecticut's first state park, is marking its 100th anniversary this year, and in recognition of the centennial, the governor announced admission to all 107 state parks would be free this weekend.

Special programs at Sherwood Island include a display on insects at the park's Nature Center. The program includes caterpillars and butterflies, and opportunities to make butterfly crafts, the Friends of Sherwood Island said.

On Saturday at 4:30 p.m., a program on saving salt marshes is scheduled. It includes a walk through the park's salt marsh.