The team has carried out research, study, and work around issues that concern projects for architecture, art, and industry for years. It consists of four professional figures:

Guglielmo Renzi         

Barbara Fontana        

Valentina Certini       

Silvia Balloni 


In the early 90s, we founded the studio in Florence. Over the years, thanks to our passion and dedication, we have completed important works for public institutions and private clients.

We constantly deal with different scale projects, from residential architecture to hotels, from shops to exhibitions, from the gardens to the site-specific.

These changes of scale allow us to reinvent ourselves every time. Knowing that every place and every project has a different meaning, we remain faithful to the philosophy of the studio that always expresses attention to details, materials, and quality of the results.

Our team regularly collaborates with sector consultants in order to support and enrich the result of each interdisciplinary work.

We always pay attention to the art world and its evolution, also thanks to an ongoing discussion with artist friends who inspire us.

Among others, our studio has participated in Documenta 8 in Kassel, within the design section, and the Biennal Venice Festival in 2014.


mario ciampi, claudia zaccagnini, michela calamandrei, ovidio belli, amedeo merlini, alessandro sauri, silvano signoretto, mario cortinovis, angelo bonalumi, vittorio ascari, alessandro ciampi, agnese cacciamani, amedeo martegani, paola de pietri, maria luisa frisa, axell müller schöll, franco bevilacqua, valerio sacchetti, hans hoger, marco benadi, ettore bravi, marco lameri, milena paolucci, noriko kataori, gian pietro imperadori, roberto marossi, luca bucciantini, mauro davoli,  bruno vaerini, tomo ara, gabriele pardi, laura fiaschi, carlo bertocci, tullio leggeri, angela vettese, loredana camacci menichelli, antonino pollio, marco della fonte, giorgia venturelli, mario airò, valentina lombardi, romana serafini, fabrizio fontana, marcella minelli, gumdesign, alessandra mele, lucia agus, giuseppe cavaleri, yoko tanabé, giuseppe savarese, marinella vanini, alberto garutti, marco toni, carla guerrini, natale patriciello, elisabetta dodi, roberto panelli, adolfo natalini, antonio catelani, stefano bertocci, alessandro chimenti, raul romiti, laura terzitta, stefano arienti, j.joseph biot, mario lupano, matteo paciotti, francesco francini , paola cavicchioli , nicola spalanzino