Mexicali rewards visitors who enjoy authentic working-city life over polished tourist sights. The historic centre near the Calexico border crossing has the Catedral de Nuestra Señora de Guadalupe, the Plaza de los Tres Poderes government district, and the faded but characterful La Chinesca old Chinatown. The Bosque y Zoológico de la Ciudad sits in a leafy park complex and includes a science museum aimed at families. For a striking and slightly unsettling sight, the Boeing 727 Crash Experiment wreckage lies along the highway to San Felipe.