Written by Emily Dixon, CNN

The rebuilt Notre Dame could function a futuristic glass style, solar energy, and an urban farm that supports vulnerable and homeless Parisians, if 1 architecture firm’s vision is realized.

In April, French Prime Minister Edouard Philippe announced an international competitors for architects to redesign the cathedral’s 19th century spire, which collapsed following a fire devastated the 850-year-old Gothic landmark. Paris firm Vincent Callebaut Architectures responded to the contact with an revolutionary, eco-friendly style that supports the regional population and produces additional power than it makes use of.

The Vincent Callebaut project is titled “Palingenesis,” a Greek idea of rebirth or recreation. The firm proposes a new roof created of glass, oak and carbon fiber, which connects “in 1 single curved stroke of pencil” to the sloping spire. The rooster which topped the original spire, retrieved from the rubble following the fire, will resume its watch from the new glass style, when the cathedral’s choir will be “bathed in all-natural light.”

Vincent Callebaut Architectures

Beneath the spire, the roof will host a fruit and vegetable farm run by charities and volunteers, in order to create totally free meals for vulnerable regional folks. “Up to 21 tons of fruits and vegetables could be harvested and straight redistributed for totally free each and every year,” the firm stated in a press release. “To that finish, a farmers’ industry would be held each and every week on the forecourt of Notre Dame.”

Vincent Callebaut Architectures

The roof and spire will also create electrical energy, heat and ventilation for the cathedral: an “organic active layer” inside the glass will deliver solar energy, when the roof’s diamond-shaped “scales” will open to supply all-natural ventilation — a style inspired by termite mounds. The spire will act as a “thermal buffer space” in which hot air accumulates in winter.

The cathedral could host an urban farm which produces food for local people.

The cathedral could host an urban farm which produces meals for regional folks. Credit: Vincent Callebaut Architectures

“How can we create the modern history of our nation, but also that of science, art and spirituality collectively?” the firm stated in a press release. “We seek to present a transcendent project, a symbol of a resilient and ecological future.”

If the Vincent Callebaut style is chosen, the firm stated, the reborn Notre Dame will define “the new face of the Church in the 21st century,” presenting “a fairer symbiotic partnership involving humans and nature.”