Located at the center of the Esplanade de La Défense, Agam's monumental fountain was conceived as a spectacular work of art on the scale of the district. It is composed of 86 shades of color in pâte de verre enamels from Venice.

A superb example of kinetic art, its 26-metre by 86-metre pool features a 72-metre spillway made of enamel mosaics specially produced in Venice. A system propels the 66 water jets to a height of 15 metres. A propulsion system that is virtually unique in the world, with a frequency converter, creates the effect of "balls" of water in the sky. The water then cascades down a 7-metre-high waterfall into Place de La Défense.
When the fountain is inactive, the shapes and colors of the basin create an illusion of movement along the cascade.

The machinery space, equivalent in size to the basin, is located below, with two water retention tanks running the length of the room. The first basin collects, filters and treats the water falling from the waterfall; 16 pumps transport the water to the second basin, located just below the jets, parallel to the first. From this emission basin, the water is projected. The system requires 850 m³ of water, 425 m³ in the basin and 425 m³ in the retention tanks and piping. Every day, due to evaporation, it is necessary to reinject between 10 and 15 m³ of water. The two polyester bunds have to be replaced every 10 years.
 

Israeli artist Yaacov Agam, born in 1928 and a student of the Bauhaus, began to take an interest in the kinetic movement in the early 50s. Using metal structural elements, media such as sound and light, and elements such as water, he invites the viewer to move around and appreciate new facets of the work, discovering its multiple possibilities.