The Wurzenpass has been a historic crossing of the Karawanks, though the main trade route from the Duchy of Carinthia to Trieste, the Austrian Littoral and Carniola ran from Tarvisio along the Predil Pass and the high valley of Rateče that was much easier to traverse. Its importance increased with the lay out of a first paved road finished in 1734. During the Cold War the Austrian Armed Forces built several defence works and bunkers along the Wurzenpass Straße which today are open to the public in the context of a documentation centre.