High Quality Content by WIKIPEDIA articles! The Walpurgis Hall (German: Walpurgishalle) is a hall on the Witches` Dance Floor near Thale in the Harz mountains, Germany, built in the Old Germanic style by Hermann Hendrich and Bernhard Sehring. The hall was opened in 1901 and is a museum today. Whilst Sehring designed the architecture of the building to Hendrich`s guidelines, Hendrich himself was responsible for the five large paintings in the interior of the hall. These portray scenes of the Walpurgis Night from Goethe`s Faust known as the: Will-o`-the-Wisp Dance, Mammon`s Cave, Witches` Dance, Bride of the Wind und Gretchen`s Appearance (Gretchen`s Tragedy).