Border Grill - Santa Monica’s high-end Mexican spot - will close in October. Chefs Mary Sue Milliken and Susan Feniger opened it 26 years ago. The food was revolutionary at the time. Gourmet Mexican was not a thing at chef-driven concept restaurants. Back in 1985, Milliken and Feniger took with a road trip across the border where they learned cooking techniques from taco vendors and family barbeques. And they married those techniques with their French culinary training. Their restaurant set a standard for upscale Mexican food across Los Angeles.