This museum is a must-see: Morocco was one of the first countries to recognise the fledgling United States, and this was the first piece of American real estate abroad (look for the letter of thanks from George Washington to Sultan Moulay Suleyman). It is also the only US National Historic Landmark on foreign soil. The elegant five-storey mansion holds an impressive display of paintings that give a view of the Tangerine past through the eyes of its artists, most notably the Scotsman James McBey, whose hypnotic painting of his servant girl, Zohra, has been called the Moroccan Mona Lisa . There is a well-stocked bookshop and a wing dedicated to Paul Bowles.