bad ems, church st. martin

building cathedral church landmark spire facade steeple tower architecture basilica chapel monastery synagogue monument abbey 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