This enormous castle complex above the Altstadt poignantly reflects Nuremberg's medieval might. The main attraction is a tour of the renovated residential wing (Palas) to see the lavish Knights' and Imperial Hall, a Romanesque double chapel and an exhibit on the inner workings of the Holy Roman Empire. This segues to the Kaiserburg Museum, which focuses on the castle's military and building history. Elsewhere, enjoy panoramic views from the Sinwell Tower or peer 48m down into the Deep Well. For centuries the castle, which has origins in the 12th century, also sheltered the crown jewels (crown, sceptre, orb etc) of the Holy Roman Empire, which are now kept at Hofburg palace in Vienna. It also played a key role in the drawing up of Emperor Charles IV's Golden Bull, a document that changed the way Holy Roman Emperors were elected. The exhibition contains an original statue taken from Prague's Charles Bridge of Charles IV who spent a lot of time in both Bohemia and Franconia during his reign.