The Kurhaus (spa establishment) was built by Friedrich Weinbrenner in 1821-24 (cafe-restaurant, conducted tours). The main road now continues under the gardens in a tunnel. To the south of the Kurhaus are the Little Theater and the Kunsthalle. To the east, beyond the Oos, are the Haus des Kurgastes (Visitors' House) and the Kongresshaus (Congress Center).