During your walk in the Arboretum, you will come upon one of the fountain pavilions, a vestige of the water system of the Versailles park.
These two small stone buildings, built under Louis XIV, are the remains of the water system supplying the Versailles and Trianon parks.
Located in the sector north of the Chèvreloup estate, close to the Rocquencourt springs, they provided access to the drainage system that collected these waters. The water then flowed through a network of underground pipes to Chèvreloup Reservoir, near the Trianon Park.
Only the pavilion situated to the northeast of the estate is visible during your visit (the second one is found in an inaccessible technical area to the northwest).