There are a number of preconditions that have made research at San Luis unique and significant. San Luis is one of two mission sites in Spanish Florida whose identity has never been lost (the other is Nombre de Dios in St. Augustine). St. Augustine and San Luis were La Florida’s eastern and western capitals, and served as the anchors of Spanish Florida’s El Camino Real or royal road. San Luis was also the only settlement beyond St. Augustine to have a significant European population; several hundred Spaniards resided there by the end of the 17th century, almost all of whom were related by blood or marriage to Spaniards in St. Augustine. This is significant since it is the only mission with a Spanish village where the native population had sustained contact with a range of Spaniards (rather than a single friar) and negotiated power sharing over the course of nearly three generations.

San Luis is also remarkable because it represents the establishment of Apalachee and Spanish capitals in the same location and at the same time. Thus the site has provided a critical material baseline from which to assess the conditions and practices of life, the nature of cultural exchange, and the development of early Hispanic-American culture and institutions from both Indian and Spanish perspectives.

Unlike its predominantly Spanish counterpart settlement in St. Augustine, the cultural landscape of San Luis was a true amalgamation of Spanish and Indian traditions and reveals many of the moderate approaches to colonization that are seldom explored. Following Spanish town planning ordinances codified by Spanish King Philip II in 1573, St. Augustine was established on a formal grid pattern radiating outward from a rectangular plaza. Spanish public buildings and elite residences were located near the town plaza, while Indian missions were established on the periphery of town. At San Luis, the town was laid out around a circular plaza that was best known as the site of the traditional Apalachee ballgame. While Hispanic residences were clustered near the town center, the Apalachees maintained a highly dispersed (and essentially prehistoric) settlement pattern with only native leaders residing at the mission center near Spanish authorities. Apalachee commoners under the jurisdiction of San Luis’s chief continued to live in outlying areas near their fields.

The most dominant building on the central plaza at San Luis was the Apalachee council house. In the broadest sense, the village council house symbolized the bond of the community. It was primarily the property of the chief and a symbol of his authority that held his people together, counteracting divisive forces resulting from the village’s dispersed settlement pattern. There was a direct correlation between a village’s population and the size of its council house; some held between 2,000 and 3,000 people. At over 140 feet in diameter, the Apalachee council house at San Luis is the largest known historic-era Indian building in the Southeast. Furthermore, the location of the enormous Apalachee council house (and the adjacent chief’s house) on the central plaza of the Spaniards’ western capital, directly across from the Franciscan church, speaks to an unprecedented level of accommodation at this town site.