In the wake of the fire that destroyed parts of Paris’ Notre Dame, Fench President Emmauel Marcon announced an international competition for the cathedral’s redesign. Architects from Vincent Callebaut Architectures proposed an eco-friendly design of the church’s roof and spire, converting it into a solar-paneled urban farm.

Called the “Palingenesis” project, which means rebirth or regeneration in Greek, the proposal saw the new roof as being made of glass, oak, and carbon fiber, which will serve as a solar panel for the church. It will also be turned into an urban farm that would be able to produce up to 21 tons of crops that will be donated to the locals at the farmer’s market weekly.

Aside from project Palingenesis, other firms offered sustainable designs such as making a home for bees and a sanctuary for animals using sustainable materials like recycled ocean plastic. Others envisioned constructing a public pool on the roof and a flame-looking spire made of gold. According to Emily Guerry, a European history expert from Britain’s University of Kent, the restoration is estimated to take around 20-40 years.

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