Walk through old-world Mexico at Downtown's historic site where tourists and locals alike roam the promenade dotted with restaurants and stores. Don't leave without picking up Mexican candies and souvenirs and sampling various tacos and huaraches.
Olvera Streetstreet is a huge slice of Mexican culture spanning one street. Olvera offers lots of flea market type arts & craft, Mexican restaurants, and entertainment. I'd say it makes for a good weekend day trip to do in tandem with also visiting Chinatown.