Overview

• Manager Irene Guiñales says she hired a historian and recovered mid-18th-century land registry entries after local archives burned in the Spanish Civil War
• Sobrino de Botín has held the Guinness title since 1987, marking 300 years of continuous operation near Plaza Mayor and drawing patrons including Ernest Hemingway
• Guinness rules require uninterrupted service at the same site under an unchanged name, backed by substantial documentation spanning centuries
• Botín’s tourist-driven clientele contrasts with Casa Pedro’s mostly local regulars gathered in its rustic Fuencarral setting
• Even older venues such as Paris’s Le Procope (1686) and Beijing’s Bianyifang (1416) would face the same strict verification hurdles without proof of unbroken operation at one location