Waldshut-Tiengen
It is the district seat and at the same time the biggest city in Waldshut district and a "middle centre" in the area of the "high centre" Lörrach/Weil am Rhein to whose middle area most towns and communities in Waldshut district belong ( with the exception of seven communities that belong to Bad Säckingen's area ) . 
<triplet> Waldshut <subj> Bad Säckingen <obj> contains administrative territorial entity <triplet> Bad Säckingen <subj> Waldshut <obj> located in the administrative territorial entity