Why you should experience Twiggs Street in San Diego, California.
Twiggs Street is a historic Old Town corridor where California's earliest civic history, Mexican-era heritage, and architectural preservation converge along one of the birthplace streets of modern San Diego.
Running through Old Town between Congress Street and San Diego Avenue, this character-rich corridor connects preserved adobe homes, living history museums, historic plazas, artisan shops, and cultural landmarks that immerse visitors in the formative years of California's first permanent European settlement. Weathered adobe walls, shaded courtyards, brick pathways, and restored nineteenth-century buildings preserve an atmosphere that feels remarkably unchanged from San Diego's earliest decades. For generations, Twiggs Street has remained intertwined with the city's colonial, Mexican, and early American chapters, offering an unusually authentic streetscape where history is experienced rather than simply interpreted. The result is a corridor defined by historical continuity, cultural preservation, and enduring statewide significance.
What you should know about Twiggs Street.
Twiggs Street is best known for preserving Casa de López, an adobe originally constructed in 1835 that became California Historical Landmark No. 60 and was painstakingly reconstructed after Interstate 5 construction threatened its survival, ensuring one of Old Town's oldest surviving residential landmarks remained part of San Diego's historic landscape.
Built by Francisco López during the Mexican period, the long adobe residence expanded alongside the family's growth and became one of Old Town's defining domestic structures. When freeway construction endangered the building during the 1960s, original timbers, doors, and architectural elements were carefully preserved before the structure was reconstructed using detailed Historic American Buildings Survey documentation. Its survival represents one of the city's most significant historic preservation efforts, demonstrating how irreplaceable pieces of California's architectural heritage can endure despite dramatic urban transformation. Today, Twiggs Street continues to embody that commitment to preserving the places where San Diego's earliest civic story unfolded.
How to fold Twiggs Street into your trip.
Twiggs Street is best experienced as an exploration of California's earliest civic history, preserved adobe architecture, and Old Town's remarkable cultural legacy.
Begin at Old Town San Diego State Historic Park, where restored buildings, museum exhibits, and living history programs immediately establish the historical significance surrounding Twiggs Street. Continue toward Casa de Estudillo, whose elegant adobe architecture offers one of the finest surviving examples of California's Mexican-era domestic life. From there, make your way to Mason Street School Museum, where California's first publicly owned schoolhouse provides a fitting conclusion while illustrating the transition from frontier settlement to organized civic life. The progression moves naturally from San Diego's premier historic park to one of its most celebrated adobe residences before concluding at the city's earliest public school, revealing how Twiggs Street preserves the foundations upon which modern San Diego was built.
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