A nice view of the old castle of Novigrad and the valley of Dobra  stretches from the viaduct Dobra on the Zagreb-Rijeka motorway. Only two kilometers upstream of Viaduct is the imposing stone bridge over Dobra on the “motorway of Karolina” (Karlovac – Rijeka – Bakar), thanks to which the inner Croatia was connected with the Croatian coastline in 1732.