cistern cisternas cisterns estambul istanbul monument monuments sub Turkey turquia Underground water bathroom box commode England lavatory old toilet blue container escalate iron oil receptacle sky spiral stairs step tank vessel walking car cutout deliver isolated liquid lorry tank truck tanker transport transportation truck ancient architecture Balearic Islands channel cool decay desuetude divided division elements garden historical irrigation light majorca Moorish pair plants plaster refreshing rivulet shade shaded shady Spain spanish steps stone stream trough two wall watercourse watering