Bad Wörishofen is a spa town in the district Unterallgäu, Bavaria Germany. The spa complex is called Therme Bad Wörishofen. A spa town is a town frequented, in times past, for health reasons, to take the waters. The name derives from the Belgian town Spa, and in continental Europe, a spa was known as a ville deau (town of water). ... Unterallgäu is a Kreis (district) in the southwestern part of Bavaria, Germany. ... With an area of 70,553 km² (27,241 square miles) and 12. ...