Detroit (, locally also ; French: Détroit, lit. 'strait') is the largest and most populous city in the U.S. state of Michigan, the largest United States city on the United States–Canada border, and the seat of Wayne County. The municipality of Detroit had a 2017 estimated population of 673,104, making it the 23rd-most populous city in the United States. The metropolitan area, known as Metro Detroit, is home to 4.3 million people, making it the second-largest in the Midwest after the Chicago metropolitan area. Regarded as a major cultural center, Detroit is known for its contributions to music and as a repository for art, architecture and design.
Detroit is a major port located on the Detroit River, one of the four major straits that connect the Great Lakes system to the Saint Lawrence Seaway. The Detroit Metropolitan Airport is among the most important hubs in the United States. The City of Detroit anchors the second-largest regional economy in the Midwest, behind Chicago and ahead of Minneapolis–Saint Paul, and the 13th-largest in the United States. Detroit and its neighboring Canadian city Windsor are connected through a tunnel and the Ambassador Bridge, the busiest international crossing in North America. Detroit is best known as the center of the U.S. automobile industry, and the "Big Three" auto manufacturers General Motors, Ford, and Chrysler are all headquartered in Metro Detroit.
In 1701, Antoine de la Mothe Cadillac founded Fort Pontchartrain du Détroit, the future city of Detroit.