Ключевые слова: alexander square, alexanderplatz, architecture, attraction, berlin, center, city, communism, communist, culture, destination, economist, engels, europe, european, forum, friedrich engels, friend, friendship, german, germany, historian, inspiration, intelligence, journalist, karl marx, landmark, manifesto, marx, marxengelsforum, monument, philosopher, political, politics, portrait, revolutionary, scientist, sculpture, social, socialism, socialist, sociologist, statue, symbol, tourism, tourist, town, travel, trip, wisdom,