Its official: Boston City Hall is a local landmark. The 1968 Brutalist building by Michael McKinnell and Gerhard Kallmann is now enshrined underChapter 772 of the Acts of 1975, preserving it for future generations. Boston Mayor Michelle Wu and the Boston Landmarks Commission announced the official designation on Friday January 24. The announcement came after Boston Landmarks Commission accepted Boston City Halls landmark designation last December, and decades of hard work more broadly.For more than five decades, Boston City Hall has served as a hub where residents come together to shape our citys future, and has become a symbol of our citys resilience, innovation, and commitment to our constituents, Wu said in a statement.As we officially designate Boston City Hall a Landmark, we honor its deep historical and cultural significance, Wu continued. This milestone serves as an affirmation of our commitment to preserving this space as a vital symbol of our democracy and a center for civic engagement. Our administration is proud to help the building evolve into a space that is accessible to the community while maintaining its historic character. The movement to landmark the municipal building started around 2008; it was advanced by Douglass Shand-Tucci, an architectural historian who started the Boston City Hall preservation campaign. Shand-Tucci took action not long after then-Mayor Thomas Menino shared plans to sell the buildingso he could finance a new city hall in South Boston.Boston City Hall was recommended for landmark status in October 2023. Boston Landmarks Commission accepted Boston City Halls landmark designation that following December, culminating in Mayor Wus approval this month. City Councilor Sharon Durkan shared Wus enthusiasm.Since 1968, this building has stood as a bold architectural statement and a living symbol of transparency, innovation, and civic identity, Durkan said. This milestone honors not just its iconic design but the community it serves while challenging us to preserve its legacy and reimagine its role for future generations.Durkan credited Eamon Shelton and Kristen McCosh, both from the Boston Landmarks Commission, for helping bring the designation across the finish line.Looking ahead, the designation will prevent major renovations that would infringe upon Boston City Halls Brutalist integrity from happening, albeit while still allowing for necessary repairs.