Aqueduct (bridge)W
Aqueduct (bridge)
Aqueduct (water supply)W
Aqueduct (water supply)
Cisternoni of LivornoW
Cisternoni of Livorno
Cairo Citadel AqueductW
Cairo Citadel Aqueduct
DitchW
Ditch
First Vienna Mountain Spring PipelineW
First Vienna Mountain Spring Pipeline
FlumeW
Flume
Leader's AqueductW
Leader's Aqueduct
Log flumeW
Log flume
NoriaW
Noria
PenstockW
Penstock
Solomon's PoolsW
Solomon's Pools