I visited Heidelberg about 8 years ago. In the long traffic-free street in the centre, there was an art shop that sold paintings etc., they seemed to specialise in art by an american artist whose paintings were mainly, i think, of New york, and consisted of brightly coloured cut outs pasted on to a background. I know it's a long shot, but can anyone help with either, the name of the shop, or the artist?
The street was the one with the statue of Bunsen. If you stand with your back to the statue the shop was to the left about 100metres ( I think) and on the right hand side.