H.R. No. 48 is a resolution commemorating the 10th anniversary of the San Antonio Missions' designation as a UNESCO World Heritage Site, which occurred on July 5, 2025. This designation recognizes the cultural significance of the five historic missions located in San Antonio—Mission San Antonio de Valero (the Alamo), Mission Concepción, Mission San José, Mission San Juan, and Mission Espada. These missions, established in the early 18th century by Franciscan missionaries, represent a blend of Spanish colonial and Indigenous cultures, showcasing their historical importance and architectural features along the San Antonio River basin.

The resolution expresses the Texas House of Representatives' appreciation for the San Antonio Missions and their role in reflecting the rich cultural heritage of Texas. It extends best wishes to all those associated with the missions and calls for an official copy of the resolution to be prepared as a token of esteem from the legislature. The resolution was adopted by the House on August 27, 2025, by a non-record vote.