[3] Martinelli followed the evolution of the work, from the laying of the structure's first pole on the barge to the introduction into the waters of the Teatro, through to the maiden voyage in the mist of the Venetian lagoon towards the Punta della Dogana, at the entrance of the Grand Canal.
[5] His friendship with Aldo Rossi and other architects and historians such as Francesco Dal Co,[6] Manfredo Tafuri, Mario Botta, Jean-Louis Cohen,[7][8][9] Claude Vasconi,[10][11] Henri Gaudin,[12] Massimiliano Fuksas and Peter Zumthor,[13] led to other collaborations and projects on Venice, Italy, France and Japan.
After reading Mildred Archer's Early Views India, Martinelli became interested in the work of English artists Thomas and William Daniell (respectively uncle and nephew),[20] who travelled and photographed the Indian subcontinent at the end of the 19th century.
Various books about Martinelli's trip were published in France, the UK and India,[21][22] and several exhibitions were also held: Victoria Memorial Hall in Calcutta in 2000,[23] Paris in 2005,[24] and Rome[25][26] and New Delhi in 2011.
[29][30] Between 2001 and 2024, he worked with French magazines Point de Vue and Images du Monde to produce dozens of reports in France, Europe and around the world which covered a wide range of subjects relating to art, culture, heritage and travel.
[37] Martinelli was asked by architectural historians Jean-Louis Cohen and Pascal Mory to photograph a number of emblematic buildings constructed between the two World Wars for the "Paris Moderne 1914-1945" exhibition held at the Power Station of Art in Shanghai between July and October 2023.