A s Imperial City and capital of tourist in Morocco I suggest Marrakesh, cause really there a lof of and a nice thing to discover in Marrakesh in side Medina or out side Marrakesh look magical and also luxury Marrakech villa, in Marrakesh you will see the history of Morocco and the great maghreb "Kouboubia mosque, Menara , bahia palace, badii palace, djemaa elfa square, medrassa ben youssef ..."because Marrakesh is was the capital and people are very nice and kindly.
