Wedding & Reception Venue with guests Lodging Accommodations. Legendarily located between TX 130, State Hwy 29, and the historic San Gabriel River, San Gabriel's Horn is distinctly Williamson County. "The Horn" boasts vast panoramic views of dramatic Hill Country sunsets, the San Gabriel River, and the Georgetown River valley. The Horn provides for the bride a complete bridal suite with fireplace & private elevated deck, groom's room, gift room, and indoor or outdoor ceremony locations.