In regenerating Piazza San Giovanni in Laterano, the vision was to reactivate the basilica’s piazza into an inviting, inclusive and accessible urban square, renewing its sense of purpose and quality. The design was inspired by the ornate 700-year-old Cosmati paving inside the basilica, especially its complex circular geometries. The aim was to extend the richness and energy of this pattern from within the basilica into the square. The project also responds to Rome’s C40 climate goals, addressing urban heat island and stormwater management. Rome’s long history of water innovation, including the historic flooding of Piazza Navona for cooling, inspired the idea of fountains in the square.
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The former square at San Giovanni in Laterano lacked a strong sense of place, especially as the setting for such a significant basilica. This project was therefore a chance to transform it into a vibrant civic space. Water elements reflect and amplify the grandeur of the basilica’s facade and the adjacent Scala Santa, enhancing their urban presence. The water is also an invitation for gatherings, play and interaction, bringing new energy to the square. The redesign removes raised landscape curbs, reducing barriers to improve safety and inclusivity. In doing so, the new square reaffirms its urban role as a key node for large-scale events.
Piazza San Giovanni in Laterano uses durable paving in travertine, basalt and sampietrini, promoting the use of local Roman materials. To reduce the urban heat island effect, the team prioritised light-coloured travertine over the darker basalt or sampietrini typically found in Roman piazzas. Given a clear mandate to avoid trees in the square due to interference with sightlines during the annual Primo Maggio concert, the project instead uses water fountains and mist to create a cooling microclimate within the square. The fountain system is designed in tandem with the square’s drainage system to detain stormwater and reuse it to avoid overburdening Rome’s stormwater system during major rain events.
“The space in front of the oldest Basilica in Rome was almost forgotten, reduced to a crossroads for cars and pedestrians. The transformation is now evident… The new square overlooking the Basilica represents the new face that we intend to give to the city, based on enhancement and livability.” - Ornella Segnalini, Councilor for Public Works
One Works is a global architecture and engineering firm that operates with an integrated approach to consultancy and design, across sectors including transport infrastructure, master-planning, commercial real estate, and public and private buildings, shaping some of the most complex projects. Founded in 2007 and built on the professional legacy and international vision of its managing partners, One Works has grown exponentially, focusing its multidisciplinary collaborations on high-quality design. It operates from several strategic locations around the world, with its headquarters in Milan and offices in Venice, Rome, Dubai, and London. From these locations, a close-knit team of over 150 architects, designers, and engineers offers a flexible and reliable approach to designing and delivering projects worldwide.
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