Boston, officially the City of Boston, is the capital and most populous city in the Commonwealth of Massachusetts in the United States. The city serves as the cultural and financial center of the New England region of the Northeastern United States.

Boston was founded on the Shawmut Peninsula in 1630 by Puritan settlers. The city was named after Boston, Lincolnshire, England. During the American Revolution, Boston was home to several events that proved central to the revolution and subsequent Revolutionary War, including the Boston Massacre (1770), the Boston Tea Party (1773), Paul Revere's Midnight Ride (1775), the Battle of Bunker Hill (1775), and the Siege of Boston (1775–1776).

Boston has emerged as a national leader in higher education and research and the largest biotechnology hub in the world. The city is also a national leader in scientific research, law, medicine, engineering, and business. With nearly 5,000 startup companies, the city is considered a global pioneer in innovation and entrepreneurship, and more recently in artificial intelligence. Boston's economy also includes finance, professional and business services, information technology, and government activities. Households in the city claim the highest average rate of philanthropy in the United States. Furthermore, Boston's businesses and institutions rank among the top in the country overall for environmental sustainability and new investment.