El Palacio de la Pizza has been open since 1956 and despite the palacial name, it is a bit stark inside. Many pizzerias on this list are frozen in time, but el Palacio de la Pizza wins in that department.
The lettering board menu, backlit signs, and grumpy waiters have likely not changed a bit in almost 70 years.
For something unique, order a slice of spinach and bechamel or ricotta.