Ключевые слова: architecture, bahn, bonn, building, business, car, city, communication, drachenfels, fast, industrial, industry, journey, light, line, locomotive, modern, motion, move, movement, old, passenger, people, perspective, platform, public, rail, railroad, railway, siebengebirge, station, subway, technology, tour tourism, track, traffic, train, transit, transport, transportation, travel, urban, vehicle, wagon, way, zahnradbahn,