I recently went to the Singer Sargent watercolours exhibition at Dulwich Picture Gallery. It was packed with people in the run up to the closing day. His pictures are powerful with rocks and scenery of the middle east capturing the sun and heat so well.
Most moving were the WW1 pictures of troops and the star of the show his picture of The Girl beneath the Umbrella. Tragically she was later killed in Paris by a German shell.