San Diego Viejo Plaza
| San Diego Viejo Plaza Plaza de Las Armas Washington Square Pueblo de San Diego | |
|---|---|
San Diego Viejo Plaza in 1872 | |
| Location | 4098 Mason Street Washington Square Old Town San Diego San Diego, California |
| Coordinates | 32°45′14″N 117°11′46″W / 32.754°N 117.196°W |
| Founded | 1835 |
| Built | 1821 |
| Architectural style(s) | Monterey Colonial |
| Designated | December 5, 1932 |
| Reference no. | 63 |
San Diego Viejo Plaza (San Diego Old Plaza), also called Plaza de Las Armas (Plaza of the Cannon), Old Town Plaza, and Washington Square, is a historical site in San Diego, California. The San Diego Viejo Plaza site is California Historical Landmark No. 63, listed on December 5, 1932. The plaza (town square) was the center of the Pueblo de San Diego, founded in 1835 in Alta California.