Hundertwasserhaus in Bad Soden am Taunus, a spa town in Hessen, Central Germany. It’s a popular residential town for commuters working in Frankfurt am Main. It’s known for its natural springs, which contain carbonic acid gas and various iron oxides. The waters are used both internally and externally, and are widely exported. Sodener Pastillen (lozenges), condensed from the waters, are in great demand. There’s a large Kurhaus (spa), an Evangelical and a Roman Catholic church, and a small hospital.