Chapelle Royale de Chaville Aqueduct Arches
Stretching through the woods on the edge of Sèvres and Chaville, the 17th-century aqueduct arches of the Aqueduc de la Bête du Roi are a genuinely overlooked piece of Versailles-era hydraulic engineering — a kilometre of mossy stone arcades that once carried water to Louis XIV's fountains and now stand forgotten in the forest like a Roman ruin.
History Carved in Stone
Louis XIV's insatiable appetite for water features at Versailles drove one of the most ambitious civil engineering projects of the 17th century, and this aqueduct was one of several feeder systems that channelled water from the Yvelines plateau toward the palace gardens. The arches here reach up to 12 metres in height and stretch in an unbroken line that creates a remarkable perspective when viewed from the forest floor.
Much of the stonework is original, with repairs visible in different-coloured limestone that acts as a timeline of maintenance across three centuries. Moss and ivy have colonised the upper courses, giving the structure the romantic decay of a much older monument.
Finding It and Exploring
The most photogenic section runs parallel to the Allée de la Bête du Roi in the Forêt de Chaville, accessible from the D985 road between Chaville and Viroflay. There are no signs, no entrance fee, no café and no other tourists — just the arches, the trees and birdsong.
Combine this with a walk through the Bois de Fausses-Reposes for a half-day of forest and heritage that feels completely off the beaten track. Wear sturdy shoes; the path beside the aqueduct is unpaved and uneven.
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