The Dorchester Heights Monument (pictured), memorializing the siege of Boston during the American Revolutionary War, was dedicated.

The Dorchester Heights Monument is a large public monument in the Dorchester Heights area of Boston, Massachusetts, United States. The monument, consisting of a 115-foot (35 m) marble tower, honors the evacuation of Boston during the American Revolutionary War, an early American victory in the conflict. The monument is located near where George Washington ordered the construction of a redoubt, an area which has since been developed as a public park. It was designed by the architectural firm of Peabody & Stearns and was dedicated on March 17, 1902.

The siege of Boston was the opening phase of the American Revolutionary War. In the siege, American patriot militia led by newly-installed Continental Army commander George Washington prevented the British Army, which was garrisoned in Boston, from moving by land. Both sides faced resource, supply, and personnel challenges during the siege. British resupply and reinforcement was limited to sea access, which was impeded by American vessels. The British ultimately abandoned Boston after eleven months, moving their troops and equipment north to Nova Scotia.

The American Revolutionary War, also known as the Revolutionary War or American War of Independence, was the armed conflict that comprised the final eight years of the broader American Revolution, in which American Patriot forces organized as the Continental Army and commanded by George Washington defeated the British Army. The conflict was fought in North America, the Caribbean, and the Atlantic Ocean. The war's outcome seemed uncertain for most of the war. But Washington and the Continental Army's decisive victory in the Siege of Yorktown in 1781 led King George III and the Kingdom of Great Britain to negotiate an end to the war in the Treaty of Paris two years later, in 1783, in which the British monarchy acknowledged the independence of the Thirteen Colonies, leading to the establishment of the United States as an independent and sovereign nation.