Complex sentence: Schlitterbahn Waterpark Resort in New Braunfels, Texas, originally opened in 1979 with four water slides, is built along the cool spring-fed waters of the Comal River.
Split into simpler sentences: Schlitterbahn Waterpark Resort in New Braunfels originally opened in 1979 with four water slides. It is built along the cool spring-fed waters of the Comal River.