Great cities that I have been to:

Asia: Beijing, Shanghai, Seoul

Europe: Rome, Venice, Florence, Siena, Milan, Pisa,Paris, Nice, Marseille, Chamonix, Annecy, Monaco, Zurich, Luzerne, Bern, Geneva, Zermatt, Interlaken, Frankfurt, Heidelberger

North America: Washington DC, Atlanta, New York City, Boston, San Franciso, Los Angeles, San Diego, Danver,Orlando, New Orleans