His works focus on the redefinition of areas described as intangible, mental space and geographic space. His main projects deal with changes in Muslim societies and, in particular, their historical flaws. His work on Sufism over a 15-year period has contributed to raising awareness of this philosophy in Europe. For the past five years he has been working on Saharan sites, which are traditionally seen as unchanging. Bruno has worked with The New York Times, Stern, Le Monde and Geo. His pictures have been exposed in Europe, America and Africa.