Just a 160 mile drive from San Antonio, straddling the Mexican and American border, lies a true gem in the desert, Lake Amistad. With over 850 miles of shoreline and 68,000 acres of sparkling water, it's one of the largest and most popular lakes in Texas. For houseboaters, Amistad may very well be one of the friendliest. In fact, the name Amistad means friendship in Spanish.