University of Toronto’s Trinity College delivers bold, tree-hugging architecture

The University of Toronto’s Trinity College has unveiled the Lawson Centre for Sustainability, a striking architectural achievement that seamlessly integrates nature into its design. The four-storey building, constructed in dapper brown brick, features a courtyard filled with indigenous plants, including a prominent tall oak tree that now stands at the heart of the new campus area. This tree, previously overlooked near a parking lot, became the focal point around which the entire structure was designed. Designed by Dutch architect Francine Houben of Mecanoo in collaboration with Toronto-based RDHA, the Lawson Centre represents a bold shift in institutional architecture. The project emerged from an invited competition, marking a significant milestone in sustainable building practices. The building, spanning 155,000 square feet, houses student residences set to open this fall, classrooms, and a communal eatery. Its design emphasizes community engagement and environmental harmony, reflecting a deliberate effort to reshape the traditional culture of Trinity College. The architects aimed to foster a more outward-facing environment, countering the previous inward focus of the college. “The life here was strongly based around eating and coming together,” Houben recalled, noting that the old culture had limited interaction with the outdoors. To address this, the team incorporated a café within the new building, offering students and visitors a space to gather around a fireplace, relax on vibrant orange seating, and navigate between patterned ceramic flooring and wooden beams that support the structure. The interior showcases the use of local materials, particularly mass timber sourced from spruce, pine, and fir. These bulky beams and columns line the corridors and classrooms, forming part of the building's structural framework. Floor panels made of black spruce are crafted by Ontario’s Element5, highlighting the commitment to regional craftsmanship. Much of the wood remains exposed, a conscious choice that pushes the boundaries of building regulations. Over the past seven years, Canadian regulatory bodies have gradually embraced mass timber technology, enabling such innovative designs. The building also includes a quarter-acre rooftop farm, where students recently prepared to plant peppers, tomatoes, and nasturtiums. These crops will support a teaching kitchen within the facility, allowing faculty to integrate food-related education into their curricula. This feature underscores the building’s dual purpose as both a residential and educational hub. Architecturally, the Lawson Centre is praised for its enduring aesthetic. The Ontario limestone used complements the adjacent Gerald Larkin Building, originally constructed in 1961. The façade incorporates three shades of Arriscraft brick, arranged in narrow soldier courses. These bricks, produced under high pressure, offer a lower carbon footprint compared to conventional masonry, as explained by RDHA principal Bob Goyeche. The deep-set windows are strategically placed to add visual interest while maintaining a sense of playfulness. This new addition challenges the traditional values of Trinity College, which has historically been associated with elite status and Anglophile traditions. Founded in 1851 by John Strachan, the college was established to counter the influence of the newly formed University of Toronto. It took nearly 75 years for the college to evolve beyond these roots, and the Lawson Centre marks another step in that transformation.