Halfway along Guanajuato’s main thoroughfare, Juárez, the Plazuela de los Angeles is little more than a slight broadening of the street, but from here steps lead up to some of the city’s steepest, narrowest alleys. Just off the plazuela is the Callejón del Beso (20m up Callejón del Patrimonio and turn left), so-called because at only 69cm wide, it is slim enough for residents to lean out of the upper-storey balconies and exchange kisses across the street – naturally enough, there’s a tale of star-crossed lovers associated with it. The legend of the Callejón del Beso is classic Romeo and Juliet: two young lovers – in this case Doña Ana and her suitor, Don Carlos – separated by mean, feuding parents. The story has a fittingly tragic ending; in a desperate bid to see his love, Don Carlos bought the house opposite Doña Ana’s, across an alley so close they could hold hands. When Ana’s father caught them, he was so incensed he stabbed his daughter to death at the window – poor Carlos was left kissing her lifeless hand. Today it is said that couples who kiss whilst standing on the third step of the Callejón del Beso are guaranteed seven years of happiness.