Did I say Velryba has the best walls of any bar in Prague? I stand corrected. You really can stare at the walls in Zluta Pumpa, and not feel like an acid casualty. Somewhere between dental xrays and medieval fairy tale gone wrong, these walls alone are worth the trip to Belgicka (not to mention my other favorite on this street, Meduza). Sit outside at lunchtime and enjoy a Vinohrady burrito, or come in the evening for a session with your mates. Zluta Pumpa is run by some friendly folks who love what they do, and they have something lovely to show for it.