Viena

Not all fast food chains are created equal. Viena, founded in 1969, is a classic German-style beer bar that serves sandwiches and sausages. There are nearly 50 locations, but this is hands-down the best, located inside a charming 1883 building. I usually avoid recommending people eat on crowded Las Ramblas, but this is the exception. I usually order the lomo con queso, which is grilled pork loin with cheese. And the French fries with ketchup and mayo are a must.