Sobrino de Botín
This slice of living history is located just off Plaza Mayor and is the oldest continually running restaurant in the world (see the Guinness World Record certificate in its window for proof). Sobrino de Botín was founded in 1725 and counted Spanish painter Francisco de Goya as a waiter. It was a favourite spot of Ernest Hemingway, who used to come and write in its quite dining room in the morning before enjoying a long, leisurely lunch with friends. Try the restaurant’s speciality: roast suckling pig.