The Kurhaus is the architectural centrepiece of Baden-Baden, a neoclassical pile from 1824 that fronts the Kurgarten with eight enormous Corinthian columns. Inside is the spa town's casino, in continuous operation since the building opened and still operated as a serious gambling house — jacket required for the main salons, ID at the door, and a properly grown-up tone throughout.
The interiors are extraordinary: a series of state rooms decorated in red, white, and gold rococo, with chandeliers, gilt mirrors, and ceiling paintings. Daytime visits are possible for a small fee; in the evening the casino proper opens. Even non-gamblers can walk the formal gardens in front and the Kurgarten behind to take it in.