As a native Texan, I have plenty to choose from! I’m still holding out for an independent Republic of Texas civ, but until then here goes.
World Wonder: The Alamo
Historical Info: A Spanish mission in San Antonio that served as an important battle site during the Texan War of Independence.
Game Info: Units within 3 tiles of the Alamo inflict 50% more damage to enemy units. The Alamo also begins generating Culture and Tourism after discovering Nationalism civic.
National Wonder: State Fair
Historical Info: An annual festival in Dallas with rides, food, and games that attracts millions of visitors each year.
Game Info: Can only have one per empire. Generates gold, food, and amenities. Must be built adjacent to an Entertainment Complex.
Natural Wonder: Big Bend
Historical Info: Big Bend is a National Park in West Texas that boasts a wide range of flora, fauna, and unique geological formations.
Game Info: Upon being converted to a National Park, civilian units are able to traverse the previously impassable terrain.