Taqueria La Sierra lies hidden down a nondescript side street off what seemed to be the main drag in Antioch. Housed in what was probably an old burger joint, the first thing you notice is all the signs in the window. It can be overwhelming at first, and Cory and I both ended up ordering the same thing. Wanting the most variety for a meal, we both got three different tacos: al pastor, chicken and carne asada. Out of the ‘big three’ certainly at least one would be delicious.