King Ludwig of Bavaria
In 1869, King Ludwig of Bavaria oversaw the laying of the cornerstone for Schloss Neuschwanstein on a breathtaking mountaintop site overlooking his childhood castle home at Hohenschwangau. The walls of Neuschwanstein are decorated with frescoes depicting scenes from many of Richard Wagner's, operas, especially the swan-themed Lohengrin.
King Ludwig of Bavaria have build 3 castles in Bavaria but Neuschwanstein is famous.

King Ludwig II's world-famous castles stand proudly against the spectacular backdrop of the Alps. Neuschwanstein, his fairytale castle, is the most-visited building in Germany, and was designed to resemble a medieval German knight's castle