Just north of Frankfurt at the foot of the Taunus Mountains, Bad Homburg has been treasured for its healing baths since the 19th century, when it hosted royalty from across Europe and the world. Of course they also came for its casino, sometimes called "the mother of Monte Carlo." Today, both the original Spa Park (or Kurpark) and the Bad Homburg Casino are still here, and visitors also enjoy Bad Homburg Castle and its White Tower. Just northwest of town is Saalburg, a restored Roman fort.