Introduction to Valley of Waves: is the most important theme park in the Lost City. The center is the 6,500-square-meter wavepool. The pool is surrounded by palm trees, beaches, grass-top pavilions and deck chairs to create a tropical atmosphere. Seaside scenery. The hydraulic wave-making system can create a 1.8-meter-high wave in an average of 90 seconds, and can also create wonderful diamond patterns on the water surface when there are no waves. There are five water slides in the water park, the most thrilling of which is the Temple of Courage. The slide is 70 meters long, and the 17-meter pipe is almost vertical to the ground. More leisurely projects include rafting on the Lazy River.