125th Street is a two-way street that runs east–west in the New York City borough of Manhattan, from First Avenue on the east to Marginal Street, a service road for the Henry Hudson Parkway along the Hudson River in the west. It is often considered to be the "Main Street" of Harlem, and is co-named Martin Luther King Jr. Boulevard.Notable buildings along 125th Street include the Apollo Theater, the Adam Clayton Powell Jr. State Office Building, the Hotel Theresa, the Studio Museum in Harlem, the Mount Morris Bank Building, the Harlem Children's Zone, the Church of St. Joseph of the Holy Family, and the former West End Theatre, now home to the La Gree Baptist Church.HistoryThe street was designated by the Commissioners' Plan of 1811 that established the Manhattan street grid as one of 15 east–west streets that would be in width (while other streets were designated as in width).