The National Gallery located in Trafalgar Square in the City of Westminster, London is a Art Museum founded in 1824. With a collection of over 2,300 paintings dating from the mid 13th to the 19th century, the National Gallery houses one of the greatest collections of paintings in the world.
The National Gallery is free the enter, however donations are appreciated which go towards the up-keep of the gallery. You can enjoy the National Gallery 361 days a year which houses art works by artists including Van Gogh, Titian, Rembrandt, and Turner.