A detour to Buddha Park is not absolutely necessary. It's pretty cheesy and there are no explanations about the characters. If so, then be sure to climb into the spherical figure right in front on the right: "The highlight of the garden is a 30 m high pumpkin-shaped figure with a tree on the roof, which also serves as a viewing platform. The figure symbolizes hell, earth and heaven and is entered through the mouth of a demon's head." de.wikipedia.org/wiki/Buddha_Park