El Camino Real de Tierra Adentro National Historic Trail

El Camino Real de Tierra Adentro, also known as the Silver Route, was a Spanish 2,560-kilometre-long (1,590 mi) road between Mexico City and San Juan Pueblo, New Mexico, that was used from 1598 to 1882. It was the northernmost of the four major "royal roads" that linked Mexico City to its major tributaries during and after the Spanish colonial era.