Below street level, winding through downtown San Antonio, is a two-mile stretch of shops and dining known as River Walk. One of the first of its kind in the country, the beautiful stroll has had other cities imitating the revitalization project that made San Antonio a must-visit destination in Texas. Shaded by buildings and trees, the area also works well to keep you off the hot streets of San Antonio. At night, twinkling lights add a romantic flair.