The Bach House in Eisenach, Thuringia, Germany, is a museum dedicated to the composer Johann Sebastian Bach who was born in the city. On its 600 m² it displays around 250 original exhibits, among them a Bach music autograph. The core of the building complex is a half-timbered house, ca. 550 years old, which was mistakenly identified as Bach's birth house in the middle of the 19th century. In 1905, the Leipzig-based Neue Bachgesellschaft acquired the building. In 1907, it was opened as the first Bach museum.