enchanting spiral staircase: a glimpse into st. istvan cathedral's mystical beauty

architecture spiral old circle staircase curve building stairs abstract stair interior steps stairway light architectural design helical ancient circular curved edifice stairwell artistic staircases indoor ascending descending illuminated shadow geometrical structural historical ornate banister railing pattern perspective grand symmetry winding dramatic lighting elements column vertical enchanting staircase: glimpse istvan cathedral's mystical beauty captivating cathedral budapest showcases craftsmanship prowess time shadows create atmosphere inviting exploration history