MacDougall-Walker Correctional Institution

Bridge No. 455 is a historic open spandrel concrete bridge, carrying Connecticut Route 159 across Stony Brook in southern Suffield, Connecticut. Completed in 1929, it is one of six surviving open spandrel concrete bridges in the state. It was listed on the National Register of Historic Places in 2004.

The Noden-Reed Museum is a historic house museum at 58 West Street in Windsor Locks, Connecticut. It includes the David Pinney House and Barn, and is a surviving reminder of the town's agricultural past. It is administered by the local historical society, and is listed on the National Register of Historic Places.

The J. R. Montgomery Company Industrial Complex is a historic factory complex located on an island between the Enfield Falls Canal and the Connecticut River in Windsor Locks, Connecticut. It is next to the Windsor Locks Canal State Park Trail. The site has been listed on the National Register of Historic Places since 2017.

The Warehouse Point railroad bridge is a girder bridge with a truss main span crossing the Connecticut River between Enfield and Suffield, Connecticut. It carries Amtrak's New Haven–Springfield Line. The bridge has spaces for two tracks, but only one is connected to the mainline. It is one of a few iron bridges erected in the United States before the end of the American Civil War.

The Bridge Street Bridge is a crossing for Route 140 over the Connecticut River, connecting the towns of Windsor Locks and East Windsor. The current bridge was completed in 1992. The previous bridge at this location was a 7-span through Pratt truss built in 1921. Before that there was a suspension bridge built in 1886. Originally, there was a ferry secured to a mid-river pier.

Kings Island is the largest island in the Connecticut River and is located between Enfield and Suffield, Connecticut in Hartford County. Other names include Colonel John Pynchon's Island, Copper Island, Devotion Island, General Lyman Island, Great Island, Lyman Island, and Terry's Island The island is nearly a mile long and contains 104 Acres.

Windsor Locks is a town in Hartford County, Connecticut, United States. The town is part of the Capitol Planning Region. As of the 2020 census, its population was 12,613. It is the site of Bradley International Airport, which serves the Greater Hartford-Springfield region and occupies approximately a third of the town. Windsor Locks is also the site of the New England Air Museum. Located beside the Connecticut River and equidistant from the densely populated cities of Springfield, Massachusetts and Hartford, Connecticut, Windsor Locks is named for a set of canal locks that opened in 1829. Windsor Locks is situated just south of the first large falls in the Connecticut River, the Enfield Falls, which is the head of navigation (the farthest point that seagoing vessels can reach) of the Connecticut River. The Enfield Falls Canal circumvents the Enfield Falls and its nearby shallows.

St. John's Episcopal Church is a historic church at 92 Main Street in the Warehouse Point section of East Windsor, Connecticut. Built in 1804, its interior was extensively restyled in the second half of the 19th century to resemble a Gothic English country church. The building, still in active use by the original congregation, was listed on the National Register of Historic Places in 1982.

The Alexander King House is a historic house at 232 South Main Street in Suffield, Connecticut. Built in 1764, the house interior contains one of the state's finest collections of 18th-century Georgian woodwork. It was listed on the National Register of Historic Places in 1976. It is now a historic house museum operated by the Suffield Historical Society.

Memorial Hall is a historic meeting hall at South Main and Elm Streets in Windsor Locks, Connecticut. Built in 1890 as a memorial to the town's American Civil War soldiers, it has served for most of its existence has a meeting place for veterans' organizations, from the Grand Army of the Republic to the American Legion. It is also one of the town's finest examples of Romanesque architecture, and was listed on the National Register of Historic Places in 1987.

St. Joseph Parish is a parish designated for Polish immigrants in Suffield, Connecticut, United States. It was founded on March 12, 1916. It is one of the Polish-American Roman Catholic parishes in New England in the Archdiocese of Hartford.

The Hatheway House, also known as the Phelps-Hatheway House & Garden is a historic house museum at 55 South Main Street in Suffield, Connecticut. The sprawling house has sections built as early as 1732, with significant alterations made in 1795 to a design by Asher Benjamin for Oliver Phelps, a major land speculator. The house provides a window into a wide variety of 18th-century home construction methods. It is now maintained by Connecticut Landmarks, and is open seasonally between May and October. It was listed on the National Register of Historic Places in 1975.