Five old, hand crafted rainwater storage cisterns located in the villages of Pyrgos, Mesa Gonia and Exo Gonia, were in the focus of a research project recently concluded in Santorini. The project aimed at advancing rainwater harvesting in the island of Santorini, undertaken by the University of Cornell and Global Water Partnership – Mediterranean, with the support of the Municipality and the Water Supply and Sewage Authority of Thera (Santorini).