stairs on the street of saint-petersburg city, russia.

architecture background belfry bell blue bright buildings caracole cathedral center circular cities city cityscape collonade colorful colors corkscrew curve curved curves eastern europe european famous heritage historic historical indoor indoors interior interiors isaacs isaak isaaki isaakievsky isaaks isaaky landmark landmarks metallic peter peterburg petersburg piter popular russia russian saint saintpetersburg spiral stair staircase stairs street summer sunny tourism touristic tower travel urban vacations vibrant view white winding window