The Tree Cathedral is located outside of Bergamo, Italy, on the slopes of the Arera mountain, and is the creation of famed Italian contemporary artist, Giuliano Mauri.
Giuliano Mauri, is a ‘natural architect’ who died in May 2009. The structure was his last work, to signify the International Year of Biodiversity. It stands 21 metres tall, with five aisles and 42 columns. It’s 28.5 metres long and 24 metres wide, and has been built from 1800 firs, 600 chestnut branches and 6000 metres of hazel branch that’s been weaved into the design. 42 beeches have been planted inside, which will grow over time to provide the roof to the structure, which remains open to the rain for the time being.