The Porziuncola Chapel at St. Francis of Assisi Church in San Francisco is a unique sacred architecture and historic replication project that faithfully recreates one of Christianity’s most significant religious landmarks. Modeled after the original 5th-century Porziuncola Chapel in Assisi, Italy—the birthplace of the Franciscan Order—the 500-square-foot shrine was designed using precise measurements and extensive documentation gathered from the historic structure. The project sought to capture the spiritual character, craftsmanship, and architectural authenticity of the original chapel while meeting the functional and regulatory requirements of a modern American building.

Constructed as a stone-clad reinforced concrete structure, the chapel combines traditional materials with advanced engineering to satisfy California’s stringent seismic standards. Deep 40-foot concrete piers provide the structural stability required for earthquake resistance while remaining invisible within the finished design. Hand-carved wood doors, custom pews, and marble flooring were imported directly from Italy, and a team of master Italian artisans completed the chapel’s intricate fresco paintings, bringing centuries-old artistic traditions to the project. The result is an extraordinary example of religious architecture, historic preservation craftsmanship, and structural innovation, offering visitors an authentic connection to the spiritual heritage of Assisi in the heart of San Francisco.

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