Wartburg with snow, Eisenach, Thüringen, Eastern Germany. Die Wartburg is a castle originally built in the Middle Ages, situated on a 410 m precipice, overlooking Eisenach. In 1999, it was declared a UNESCO World Heritage site. It was home to St. Elisabeth of Hungary and the place where Martin Luther translated the New Testament of the Bible into German. It also was an important inspiration for Ludwig II when he decided to build Neuschwanstein, and is now a popular tourist attraction. Although the castle today still contains substantial original structures from the 12th-15th centuries, much of the interior dates back only to the 19th-century period of Romanticism. Read more.