Great Fountain, Enville to conceive. This, the large fountain, is on a level with the surface of the lake, and composed of five jets, the central one throwing a column of water 150 feet high; the supply being obtained from a large reservoir on the hill, to which it is first pumped by the united action of two engines, each of thirty horsepower.". The water continued to jet for several minutes, until the water in the reservoir was exhausted. The Great Fountain was the early ancestor of similar fountains located in lakes or bays, such as the Jet d'Eau in Geneva, Switzerland, which
Fountain had only a drop from the source to the fountains, which meant the water could only fall or trickle downwards, not jet very high upwards. The Trevi Fountain is the largest and most spectacular of Rome's fountains, designed to glorify the three different Popes who created it. It was built beginning in 1730 at the terminus of the reconstructed Acqua Vergine aqueduct, on the site of Renaissance fountain by Leon Battista Alberti. It was the work of architect Nicola Salvi and the successive project of Pope Clement XII, Pope Benedict XIV and Pope Clement XIII, whose emblems and inscriptions are