The competition for the rebuild of Notre Dame’s fallen spire has seen architects from around the globe putting their two cents in. Let's take a look at some of the most interesting ideas so far.
Studio NAB
![greenhouse11.jpg Studio NAB Notre Dame](/getattachment/04d85e5a-1b69-44ae-ba3f-64c1f6a470d6/greenhouse11.jpg.aspx)
Image credit: Studio NAB
French architecture firm Studio NAB has suggested a rooftop greenhouse that would embrace biodiversity, education and solidarity.
Mathieu Lehanneur
![mathieu.jpg Mathieu Lehanneur Notre Dame](/getattachment/31edba3f-5461-4a80-badb-d48901a2495d/mathieu.jpg.aspx?width=500&height=500)
Image credit: Mathieu Lehanneur
French designer Mathieu Lehanneur has suggested not building a new spire or roof but instead recreating and immortalising the flames, creating a monumental piece covered in gold leaves.
Studio Fuksas
![Studio Fuksas Notre Dame](/getattachment/bf1af2cd-8ad0-4a96-acc0-2c578ac7f8cc/studiofuksas.jpg.aspx?width=700&height=525)
Image credit: Studio Fuksas
Symbolic of the fragility of history and spirituality, Italian architecture firm Studio Fuksas has suggested a new roof and spire made from Baccarat crystal, which could be lit up at night.
Vizumatelier
![Vizumatelier Notre Dame](/getattachment/9288d8a6-e6c8-48bb-af74-b62f2031c9d0/vizumatelier.jpg.aspx?width=500&height=488)
Image credit: Vizumatelier
Slovak firm Vizumatelier has proposed a lightweight tower which will exude a beam of light that will project into the sky. According to the architect, this is a reference to the Gothic period where architects were trying to reach the sky.
AJ6 Studio
![AJ6 Studio Notre Dame](/getattachment/85517fd4-39e4-4945-b6a4-f867cfa34049/aj62.jpg.aspx?width=700&height=366)
Image credit: AJ6 Studio
Also referencing Gothic architecture, Brazilian firm AJ6 Studio has proposed a roof and spire made almost completely of stained glass.
Conc3rde
![Conc3rde Notre Dame](/getattachment/84a024c6-2d6f-4fe7-b164-d76caf23b5df/Notre-Dame-Conc3rdes-3D-printed-Le-Styrge.jpg.aspx?width=500&height=375)
Image credit: Conc3rde
Dutch design firm Conc3rde has proposed using 3D printing to reproduce lost sections of Notre Dame and to even use some of the ashes from the fire as a material in the rebuild. The firm has already printed a version of Le Styrge.