Chinatown was settled early in Los Angeles history with the first Chinese coming in 1852. The Old Chinatown Central Plaza is a landmark. Other Chinese shops, restaurants and historic buildings are throughout this area.
If you go:
The LA Chinatown Heritage & Visitors Center is open on Sundays or visit the historic society online for maps and specific attractions. The Metro Gold line stops in Chinatown at Spring Street. At ChinaTownLA.com you can also download a map.
Links:

Old Chinatown Central Plaza
943 N Broadway
Los Angeles, California 90012 USA
chssc@hotmail.com
Mailing address:
LA Chinatown Heritage & Visitors Center
411 Bernard Street
Los Angeles, CA 90012 USA
Phone Numbers:
LA Chinatown Heritage & Visitors Center
+1 (323) 222.0856
+1 (323) 222.0856