Calle Principal invites visitors of all ages to explore the Mexican American community of downtown Los Angeles during the 1920s. Located on the second floor of the historic Plaza House, Calle Principal is an evocative re-creation of 1920s-era Main Street, at the time the heart of Los Angeles's growing immigrant community. Featuring a variety of vignettes—a grocery store, portrait studio, clothing store, phonograph and record store, pharmacy, and more—it offers visitors a hands-on investigation of daily life during that period, encouraging them to make connections between the past and the present.

A Mexican grocery store in Mercado Plaza, downtown Los Angeles, 1936
The Hilario Ybarra [or Ibarra] family home on upper Main St., Los Angeles, 1905
Spanish dancers, led by Jose Rivera, pose in Los Angeles, c. 1920