Water is our most precious commodity. Without it, nothing would exist. Collecting and storing fresh water has therefore been a major preoccupation for us all since the dawn of humanity. To do so, we've built wells, cisterns, towers, and reservoirs in order to hold, preserve, and distribute this life-sustaining liquid. Many of these structures number some of the most extraordinary examples of civil engineering ever conceived, and which are today preserved for posterity.
Click through for a fascinating look at the ways we store water.