Unlike many national parks, the San Antonio Missions National Historical Park isn't just one location. Rather, it comprises a chain of centuries-old Catholic mission churches snaking along the San Antonio River. A day-long tour introduces travelers to several of these structures and highlights what makes each building unique—from the architecture of Mission Concepción to the aqueduct at Mission Espada. Private vehicles can be arranged for the Mission Trail, but active guests may prefer to follow the Park Service's map via bicycle. Check at your hotel for local bike rentals or guided tour options before hitting the trail (expect to pedal around 8 to 10 miles).