Downing Street is a famous street in London, England, known primarily for being the official residence of the Prime Minister. The most notable building on the street is 10 Downing Street, which has served as the Prime Minister's home and office since the 18th century. The building is recognized for its distinctive black door and is often associated with British politics. The street itself is located in the City of Westminster and is close to other important government buildings. It is a private road, and access is restricted to authorized personnel. Downing Street has become a symbol of the British government and is frequently featured in news reports and political discussions.