Los Angeles has the most interesting things sitting right where you wouldn't expect them.
This is the Hollywood Cemex Plant, handily located across the street from Best Buy and Target, and the Sprouts Farmers Market. It's only a few blocks from our house, and we don't live in a bad part of town, either. It's right in the city, and not in an industrial area.
I hear rumours of it closing now and then, but it's still plugging away at making concrete (or maybe just grinding up components), on La Brea Avenue, between Melrose and Santa Monica.