UNESCO World Heritage Cologne Cathedral Cologne: view towards the city centre with cathedral ©DZT (Francesco Carovillano)
UNESCO World Heritage Berlin Museum Island Berlin: Museum Island on the Spree ©Getty Images (Tomas Sereda)
UNESCO World Heritage Baden-Baden Baden-Baden: facade of the Trinkhalle couple goes for a walk ©DZT (Günter Standl)
UNESCO World Heritage Sanssouci Palace, Potsdam Potsdam: Sanssouci Palace, panorama from above ©PMSG (Andre Stiebitz)