Ключевые слова: architecture, background, blue, boat, bohemia, bridge, building, canal, channel, city, control, czech, czechrepublic, dam, day, europe, flood, floodprotection, flow, gate, gateway, green, historical, history, horin, labe, landmark, landscape, lock, melnik, military, nature, old, river, ship, shipping, stone, technology, town, transportation, travel, vltava, water, waterway,