1. Cross the Mexicali - Calexico Border
2. Change lanes to your left
3. Take Calle Madero (It passes in front "Hotel del Norte" and it's a one way street going east)
4. Continue foward to E street or Calle E (perpendicular to Calle Madero)
5. You made it... In the corner of Calle E and Calle Madero is DOCS at "Plaza España"
"Plaza España"