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, Texas, which include the Alamo and other mission complexes. These sites are notable for being the first and only UNESCO World Heritage Site in Texas and one of only 24 in the United States. The missions, established in the early 18th century by Franciscan missionaries, represent a blend of Spanish colonial and Indigenous cultures, showcasing their historical and architectural importance.

The resolution expresses the Texas House of Representatives' appreciation for the San Antonio Missions and extends best wishes to all those associated with the site. It highlights the missions' role in establishing self-sustaining communities and their contribution to the rich cultural heritage of Texas. An official copy of the resolution will be prepared as a formal acknowledgment of the significance of these historic landmarks. The resolution was adopted by the House on August 27, 2025, by a non-record vote.