Toponyms only. No place exists.

Abensberg, Alexandria, Amman, Amsterdam, Ann Arbor, MI, Atlanta, Atlanta, GA, Baden-Baden, Baghdad, Baltimore, Barcelona, Bellaterra, Berlin & Leipzig, Berlin & München, Berlin & New York, Bethesda, MD, Bochum, Bombay, Boston, Brüssel, Brussels, Budapest, Cambridge, Cambridge, MA, Chicago, Columbus, Ohio, Corning, Costa Mesa, CA, Darmstadt, Dresden, Edinburgh, Florence, Frankfurt/Main, Freren, Fribourg, Genève, Genf, Gent, Ghent & Chicago, Gießen, Göttingen, Gratz & Milan, Graz, Groningen, Gütersloh, Ham-sur-Heure, Harmondsworth, Helsingfors, Helsinki, Hildesheim, Hildesheim & Zürich, Horn, Innsbruck, Istanbul, Jerusalem, Köln, Kopenhagen, Leiden, Leiden & Boston, Leipzig, Leuven, Locust Valley, Locust Valley & New York, London, Mailand, Mainz, Malibu, Milan, Mont de Marsan, Moskau, München, Münster, Neaples, Neuchatel, Neukirchen-Vluyn, New Haven, CT, New York, New York & Brussels, New York & Cincinnati, New York & London, New York & Oxford, Oslo, Oxford, Paris, Paris & Leiden, Philadelphia, Poznán, Prague, Princeton, Providence, Providence, RI, Rom, Saarbrücken, Saarwellingen, Selingsgrove, Stockholm, Stuttgart, Tel Aviv, Toronto, Toulouse, Tübingen, Uppsala, Warminster, Warsaw, Wien, Wiesbaden, Winona Lake, IN, Zürich