Claim: Tijuana is in Southwestern Mexico.
Evidence: Tijuana -LRB- -LSB- tiːˈwɑːnə -RSB- ; -LSB- tiˈxwana -RSB- -RRB- is the largest city in Baja California and on the Baja California Peninsula and center of the Tijuana metropolitan area , part of the international San Diego -- Tijuana metropolitan area.
The Baja California Peninsula -LRB- Lower California Peninsula , Península de Baja California -RRB- is a peninsula in Northwestern Mexico.