Near the Porta Bohemica gorge, on the southern slope of the Ceske stredohori and the western edge of the Labe lowland, the Garden of Bohemia under the Radobyl mountain, at the confluence of the Ohre and the Labe. One of the oldest Czech cities, royal in the Middle Ages. The city of life and death of poet Karel Hynek Macha. Since 1950, the historic core of the city is a conservation area.