Completed in 1614, Johannisburg Palace is one of the most important Renaissance castles in Germany. Located along the Main River, the immense, four-winged complex served as the second residence of the archbishop-electors of Mainz until 1803. Today, it’s home to innumerable cultural and historical treasures, including a unique collection of cork architectural models called Bringing Rome Across the Alps. The State Gallery displays early German and Dutch paintings, with a special emphasis on Lucas Cranach the Elder, while the Princely Apartments offer a fine array of neoclassical furnishings. In the Palace Church, modern technology brings the Renaissance altar to life in a new way, using light and sound installations to highlight the 31 alabaster sculptures and almost 150 relief figures. Also not to be missed is the Palace Museum, showcasing the history of Aschaffenburg, as well as the gardens, where the fruit trees and flower beds are particularly splendid in summer.