Hohenzollern Castle, Germany

Hohenzollern Castle is the ancestral seat of the dynasty that produced German Emperors, perched at 855 metres above sea level in the Swabian Alps. The current structure, built 1846–1867, houses the Prussian Crown Jewels and Frederick the Great's portrait. Its 350,000 annual visitors include many en route to its rooftop views. The castle's elevation is 14 times higher than Bran Castle's 60-metre rock.