The modern water clock is located in the Sunburst Atrium of The Children's Museum, and is adjacent to the Grand Staircase leading up to the second floor.

[1] It was created by French scientist and artist Bernard Gitton in 1988, the same year that the museum acquired it.

The clock is made of glass, steel, and 70 US gallons (260 L) of a solution of deionized water, methyl alcohol, and coloring dye.

The water then drips down onto a scoop at the top which is connected to the green, swinging pendulum.

Moving water makes a siphon -\ You will not see it pull \ 'Til it reaches to the minutes' sphere \ And makes the water flow.At every single hour \ When the minutes' side is full \ The "minutes matching" U-tube burps: \ Another siphon pulls.The water clock has two pumps in the basement – one that keeps the clock working, and a backup in case the first fails.