According to the Guinness Book of Records, Alex and I ate at the oldest restaurant in the world. Established in 1725, Sobrino de Botín boasts such a title, as well as claiming to have had Francisco Goya as one of its waiters (thanks Wikipedia.com).
Sobrino was the first restaurant in Spain that Alex and I stepped into that told us that there was a wait, as well as the first restaurant I had ever been to that had its own tourism brochure. The restaurant is most famous for its Segovian cochinillo asado (Segovian suckling pig), which is interesting since the restaurant is in Madrid, not Segovia. Coincidentally, Alex and I had made a day trip out to Segovia earlier that day where we had true Segovian suckling pig (post coming soon) and therefore, we passed on the pig and picked a lighter fare of fresh salad and fried eggs with black sausage, as well as their sangria for a light nightcap.