US Route 101 trails along the California coastline from San Diego and beyond the northern California border. As far as San Francisco, it follows much of the same route that the Spanish explorer (conquistador) General Gaspar de Portolá traveled from 1769-1770, when he led an expedition for the Spanish king. The path was labeled El Camino Real, the Royal Road. Franciscan friars trudged along hundreds of miles with the Spanish expedition and started to build a chain of missions in Alta California along El Camino Real, which stretched from Mexico City to the San Francisco Bay. The Royal Road sprouted branches leading east over mountains and desert to Santa Fe, which was also Spanish territory. Spanish and Mexican soldiers, settlers, fur trappers and traders, messengers, Native Americans, and the Richardson family rode along El Camino Real.
Today, Californians and tourists drive US Route 101, never realizing that a good portion lies on the route along which General Portolá guided his expedition. During his explorations, Portolá established the California cities of San Diego and Monterey. He also served as the first governor of Alta California. Of the twenty-one Spanish missions constructed in the eighteenth and nineteenth centuries, some have disintegrated, but many people visit those that have been preserved and are still places of worship today.