Present and Future of the Danube. The second after the Volga. Highway of Peace. How water resources are used. Brother of the Volga and Dnieper. Upstream of the river. Delta future. In Bărăgan and Dobruja. On the Bulgarian coast. Iron Gate. Danube - Tisa - Danube. From Mohács to Budapest. Between Visegrad and Devin. Applications. Literature