Art galleries of London

Speaking about art galleries of London we should first of all mention the National Gallery, the National Portrait Gallery and the Tate Gallery. I would like to tell you about the National Portrait Gallery and about the Tate Gallery.
The National Gallery houses one of the richest and most extensive collections of painting in the world. It stands to the north of Trafalgar Square. The gallery was designed by William Wilkins and built in 834-37.