Ozer has been a Washington-area resident since 1964 and has written several books about the District including “Washington, D.C.: Politics and Place” and “Massachusetts Avenue in the Gilded Age.” His newest book is “Northwest Washington: Tales from West of the Park.” Since 1997 he has taught at American University on the interaction of history and geography in many of the great cities of the world. What cities do you teach about in your course?

I’ve taught about London, Paris, Rome, Constantinople, New Delhi, Vienna, Berlin, New York. … It’s a semester level course and I’ve taught a different city each time. I show what you might expect to find today in a city and find the historical context as you walk through it.