The owners of Casa Pedro in Madrid say it is older than Guinness World Record holder Sobrino de BotIn. But can they prove it?

In the heart of Spain’s capital, Sobrino de Botín holds a coveted Guinness World Record as the world’s oldest restaurant. But on the outskirts of Madrid, a rustic tavern makes a bold claim.

In the heart of Spain’s capital, the famous Sobrino de Botín restaurant proudly holds the title of being the world’s oldest ...

The world's oldest restaurant, Sobrino de Botín, faces a challenge from another Madrid tavern that claims it is even older...