The first picture that greets visitors to the National Gallery on Trafalgar Square is not an Old Master or an Impressionist painting. It does not even hang on a wall. Set into the floor of the first landing at the Portico Entrance is The Awakening of the Muses, a marble mosaic laid in 1933 by Russian artist Boris Anrep. Between 1928 and 1933, the National Gallery commissioned Anrep to create two ...