If you arrive in Cádiz by cruise ship, you can explore Plaza de San Juan de Dios within a few steps after disembarkation. The city’s largest square was initiated during the 15th century behind the city walls. After those defenses were removed in 1906, the square (then named Plaza de Isabel II) was extended to the harbor. Further embellishments resulted in a wide, pleasant and pedestrian-only plaza. Palm trees line this walkway for about three blocks. Plaza de San Juan de Dios is a great place for people watching, especially while dining at an outside table of a restaurant.