Downing Street

Downing Street is a street in London, United Kingdom, known for housing the official residences and offices of the Prime Minister and the Chancellor of the Exchequer,   The street was built in the 1680s by Sir George Downing,  The houses on the south side of the street were demolished in the 19th century to make way for government offices now occupied by the Foreign and Commonwealth Office, For more than three hundred years it has held the official residences of the First Lord of the Treasury, an office now synonymous with that of Prime Minister, and the Second Lord of the Treasury, an office held by the Chancellor of the Exchequer, The Prime Minister's official residence is 10 Downing Street; the Chancellor's official residence is next door at Number 11.