Hammonasset Beach State Park. Huge sites. Mark Twain House & Harriet Beecher Stowe as well. 

Very expansive individual sites on the beach section! Largest I've ever seen. Just watch. The Long Island Sound is expansive, just great. Love seeing and smelling the ocean coming in again.
We drove down to see the Mark Twain House and Harriet Beecher Stowe Center. They are right together actually. We parked in the Harriet Beecher Stowe parking lot for the entire time.
Hammonasset Beach State Park
1288 Boston Post Rd, Madison, CT 06443
203-245-2785
www.portal.ct.gov
GPS entrance: 41.269918, -72.557495
$99 for two nights
Mark Twain House & Museum
351 Farmington Ave, Hartford, CT 06105
www.marktwainhouse.org
860-247-0998
Harriet Beecher Stowe Center
77 Forest St, Hartford, CT 06105
GPS for the parking lot: 41.766624, -72.700485
Verizon/Visible: 1-2 bars