closeup of steps at rheinboulevard in the city centre of cologne, germany. empty stairs

architecture area attraction bank bridge central centre city cityscape closed closeup clouds cologne corona destination detail empty europe famous forbidden germany icon landmark lockdown loneliness modern mood north outdoor outside people place promenade quarantine rhein rheinboulevard rhine rhinewestphalia river riverside season sightseeing sitting solitude spring stairs steps tourism tourist travel urban walkway