bad ems, church st. martin

building cathedral landmark church spire facade basilica architecture tower steeple synagogue chapel dome monastery quail bad ems martin located lahn valley town recognized unesco world heritage 2021 one #39aph39#great spa towns europe#39aph39# 18th century popular prussian dutch russian aristocrats royal history connected visible monuments church shaped like canal parts historic classic buildings including hotels casino called #39aph39#spielbank#39aph39# german language