To coincide with the construction of the Ampère tower, the Rue Regnault, comprising a street and a roadside walkway, was planted in March 2017. The street continues onto the "circular" roadway, which also features a country atmosphere with pine trees, lavender and other flowering perennials.

Layers are composed of evergreen grasses, summer-flowering perennials and spring-flowering shrubs. Installed on the roadway, the space is conducive to extensive maintenance (little intervention) in line with the differentiated management plan.

The objectives of this project :

• Consistency with the surrounding environment;
• Work on the dominant acid green color (like the Cornus on the Ampère Tower);
• Promote the notion of "ecological corridor";
• Work on a "soft and country" plant palette composed of elements characteristic of biodiversity zones (flowering perennials, fruit bushes, flowering climbers, etc.);
• Restore the notion of seasonality, which modifies and brings to life the massif differently depending on the time of year, with several highlights.

This area was awarded the eco-garden label in 2022.