Brainard Homestead State Park

The East Haddam Historic District is a 110-acre (45 ha) historic district in East Haddam, Connecticut representing the historical development of two 18th-century settlements of the town on the east bank of the Connecticut River, Upper Landing and Lower Landing. The district is linear and runs along Route 149. It was listed on the National Register of Historic Places in 1983, and includes a diversity of 18th and 19th-century styles, as well as the town's main civic structures, and the Goodspeed Opera House. Also included in the district are two monuments, one to Nathan Hale and another to Gen. Joseph Spencer, a park, and a cemetery.East Haddam was settled in 1685, and was originally part of Haddam. Ferry service was introduced on the river in 1695, and developed at several points. The Upper and Lower Landings each developed somewhat independently, but over time became united into a long linear village, caused in part by the steep terrain immediately to the east which limited growth in that direction. Both landings flourished up to the American Civil War, as centers of international commerce doing business with the East and West Indies. The landings declined in economic importance after the war, owing to the rise of the railroad as the principal means of commercial transport, which was run up the west side of the river. The southern landing eventually became more significant as a tourist destination, and is where the East Haddam Bridge is now located, as is the village's commercial district.

The Nathan Hale Schoolhouse is a historic site in East Haddam, Connecticut. In the winter of 1773, Nathan Hale briefly taught in this one-room schoolhouse before leaving East Haddam for another teaching position in New London, Connecticut. The schoolhouse is owned and operated by the Connecticut Society of the Sons of the American Revolution[usurped].

Goodspeed Musicals is a non-profit organization dedicated to the preservation and advancement of musical theater and the creation of new works, located in East Haddam, Connecticut. The landmark Goodspeed Opera House is a distinctive feature of the view from the Connecticut River and is the birthplace of some of the world's most famous musicals, including Annie, Man of La Mancha, and Shenandoah. Goodspeed Musicals also includes a smaller theater in Chester CT as well as several writing and performing seminars. Goodspeed Musicals is considered one of the foremost regional theaters in the United States to date producing 250 musicals, over 70 world premieres, and sending 21 productions to Broadway. Goodspeed Musicals is the first regional theatre in America to earn two special Tony Awards, one in 1980 for outstanding contributions to the American musical and a second in 1995 for distinguished achievement for a regional theatre.

The East Haddam Swing Bridge is a steel, movable (swing) truss bridge. The bridge is composed of three spans crossing the Connecticut River between Haddam, Connecticut and East Haddam, Connecticut. The bridge carries Route 82, with an average daily traffic of 11,600. At the time of its construction, it was reputed to be the longest swing bridge of its kind in the world.

Camp Bethel is a historic Christian camp meeting facility at 124 Camp Bethel Road, overlooking the Connecticut River in Haddam, Connecticut. Founded in 1877, Camp Bethel is one of the few surviving camp meeting sites left in New England. It is owned by the Camp Bethel Association (CBA), a non-denominational, evangelical organization and is open to rent. The camp was added to the National Register of Historic Places in 2007.

Eagle Landing State Park is a public recreation area occupying 16 acres (6.5 ha) on the west bank of the Connecticut River in the town of Haddam, Connecticut. The state park has facilities for picnicking, fishing, bird watching and car-top boating. A private concessionnaire offers river excursions from a dock in the park.

The Little Haddam Historic District is a historic district encompassing a rural village center at Orchard and Town Roads in the town of East Haddam, Connecticut. The area was settled early in the town's colonial history and served as its town center into the 19th century. It retains some of its oldest surviving buildings, dating to the 18th and early 19th centuries. The district was listed on the National Register of Historic Places in 1996.

Goodspeed Airport (FAA LID: 42B) is located in East Haddam, Connecticut, United States. It has been under new ownership with the support of the Recreational Aviation Foundation since November 2020. The new owners plan to revitalize the airport and encourage a vibrant general aviation community.

Johnsonville Village, once a thriving mill community, then a Victorian Era tourist attraction, was an abandoned ghost town in East Haddam, Connecticut, United States. On July 7, 2017, the property was acquired by the Iglesia ni Cristo (Church of Christ), an independent, nontrinitarian Christian denomination based in the Philippines.

The Warner House is a historic house at 307 Town Street in East Haddam, Connecticut. Built in 1738, it is notable for its high quality interior woodwork and hardware, the latter of which were probably made by some of its owners. The house was listed on the National Register of Historic Places in 1987. The house is now owned by Connecticut Landmarks, and in 2019 it opened as a historic house museum.

Machimoodus State Park is a public recreation area located on the Salmon River near the village of Moodus in the town of East Haddam, Connecticut. The state park is bordered by Sunrise State Park to the north and by the Salmon River and Salmon Cove to the west and south. The park is managed by the Connecticut Department of Energy and Environmental Protection.

The Amasa Day House is a historic house museum at 33 Plains Road in the Moodus village of East Haddam, Connecticut. Built in 1816, it is one of the oldest buildings in the village of Moodus, and a fine example of Federal period architecture. The house, now owned and operated by Connecticut Landmarks, has displays which showcase how the Industrial Revolution changed the daily life of American families. It was listed on the National Register of Historic Places in 1972.