The Callejón del Beso is a narrow alley located in the city of Guanajuato, Mexico. It is famous for its romantic legend, which tells the story of two lovers from feuding families who would meet secretly in the alley. The alley is only about 68 centimeters wide, making it one of the narrowest streets in the world. Visitors often come to the Callejón to take photos and enjoy the vibrant atmosphere. The alley features colorful buildings adorned with murals and decorations. A popular tradition is for couples to kiss while standing on the third step of the alley, symbolizing good luck in their relationship.