Commander Shea Boulevard is a major thoroughfare in the Squantum neighborhood of Quincy. It runs from East Squantum Street to Squantum Point Park, passing by several landmarks such as the Squantum Yacht Club, the Squantum Naval Air Station Memorial, and the Marina Bay Ferry Terminal. The boulevard is named after Commander John J. Shea, a naval aviator who was killed in action during World War II. Commander Shea Boulevard has views of the Boston Harbor and the skyline.

Squantum is a neighborhood of Quincy connected to the mainland by a causeway that crosses over a wetland area of the bay. Often thought of as a peninsula, Squantum proper is technically a barrier island as it is surrounded on all four sides by water and is only connected to the mainland and Moon Island via causeways. Located in the northernmost portion of the city, Squantum is bordered on the north by Dorchester Bay and Boston Harbor, on the east by Moon Island and Quincy Bay, on the south by Quincy Bay and North Quincy, and the west by the Marina Bay development.

Squantum has scenic, waterfront views of Boston Harbor and the Boston skyline. The neighborhood is further characterized by its tree-lined streets, its "island getaway" feel, its close-knit community, and its annual Squantum Fourth of July Parade.