Brief synthesisThe San Antonio Missions are a group of five frontier mission complexes situated along a 12.4-kilometer (7.7-mile) stretch of the San Antonio River basin in southern Texas. IntegrityThe five missions were selected based on their geographical and functional relationship in the San Antonio River Basin. However, it contributes an important element to the series as the foundation of the San Antonio Missions, the first one to be created by the Franciscan Order and the first enclave that acted as a pole of attraction to the restProtection and management requirementsThe Missions of San Antonio are protected by federal laws and designations, Texas State laws and designations, City of San Antonio ordinances, and cooperative agreements, easements, and deed restrictions. At the federal level, Mission San José is also designated as a Texas State Historical Site and all five missions are Texas State Antiquities Landmarks as well as on a local level City of San Antonio Local Landmarks. Perhaps the most significant potential threat is the rapid growth and development of the City of San Antonio.