선 흑백_사진 블랙과 화이트 Archeological monochrome beautiful Architecture stairway stairs black_and_white ancient monochrome_photography daylighting Tank maze landmark 건축 벽 symmetry wall line grey 흑백 구조 랜드마크 Structure 계단 아름다운

Stairway maze

Stairways of a 7th century BC water tank.