underground basilica cistern

ahmet ancient aqueduct arc architecture asia atmospheric basilica beneath byzantine capable cathedral chamber church cistern cisterns city column columns constantinople cubic dark deposit design destination each east eastern empire firebrick gold high history hold holding hundred interior islam islamic istanbul lamps landmark large largest lie light lighting marble metres muslim orange orient oriental ottoman palace pillar reflection reservoir roman saray several sightseeing sized space still store sultan sunken traffic travel turkey turkish underground water yellow yerebatan