historic st. catherine`s church katharinenkirche, one of the five principal lutheran churches hamburger hauptkirchen with old

architecture baroque belfry bell blue bridge building canal cathedral catherine catherines center centre church churches city cityscape clock europe famous five german germany gothic hamburg hamburger harbor hauptkirche hauptkirchen heritage historic historical history iron katharinenkirche katherinen landmark lutheran medieval metal old one principal religion river rusty saint sankt site spire tour tower town travel unesco urban vacation