Stock Photo - Civil engineer Rudolf Kaepplein inspects a step on the circular staircase in the tower of the Granitz Hunting Lodge near Binz, Germany, 23 November 2015. The famous cast-iron circular staircase at the Granitz Hunting Lodge on the island of Ruegen is being restored. The seemingly delicate self-supporting staircase with 154 steps in the castle's center tower that was designed by Karl Friedrich Schinkel is 170 years old. The hunting lodge is situated on the Tempelberg in the middle of the forested Granitz ridge a few kilometers away from the seaside resrots of Binz and Sellin. The building, with its 38-meters-tall viewing tower, was commissioned by Wilhelm Malte I, Prince of Putbus, and built in a neo-Gothic style in 1896. Photo: Stefan Sauer/dpa | usage worldwide. - Binz/Mecklenburg-Vorpommern/Germany