What are the interesting places in Danzhou? What scenic spots must be visited?

The scenic spots in Danzhou include Shihua Water Cave, Hainan Tropical Botanical Garden, Songtao Reservoir, Dongpo Academy and Yanglan Hot Spring. Shihua Water Cave: Petrochemical Shuidong Geopark is located in Bayi General Field, Danzhou City, Hainan Province. The whole scenic spot consists of three parts: Inner Scenic Spot, Shilin Scenic Spot and Tropical Orchard Sightseeing Spot. It is a comprehensive garden landscape integrating scientific research, sightseeing and science and education. There are stalactites, stalagmites, rolled stones, single crystal calcite flowers and other scenery with great ornamental and scientific value in the cave, among which rolled stones are called "the best stone in the country" by experts. Hainan Xinglong Tropical Botanical Garden: Hainan Xinglong Tropical Botanical Garden is a pearl of Hainan's tourism development and is famous for its unique and rich tropical plants. The Botanical Garden contains tropical cash crops, trees and horticultural plants, preserves wild plant resources and rare species, introduces rare tropical plant species at home and abroad, rationally allocates them, and combines the alternate layout of beautiful landscapes such as forests and grasses. It is a comprehensive tropical botanical garden with rich species resources and beautiful landscape, which has the functions of scientific research, popular science, sightseeing and plant germplasm resources protection. Songtao Reservoir: Located in the upper reaches of Nandu River, Songtao Reservoir is one of the top ten reservoirs in China, the largest reservoir in Hainan Province and a key drinking water source protection area in Hainan Province. It is a multifunctional large-scale comprehensive water conservancy project integrating irrigation, flood control, water supply, power generation, shipping, aquaculture, greening and tourism. Dongpo Academy: Dongpo Academy is located in Zhonghe Town, Danzhou City, Hainan Province. The buildings in the academy are arranged along three axes, and the main buildings are uniformly arranged on the central axis, which are Toumen, Wine Pavilion, Wine Hall, Main Hall, East-West Corridor, Breqin Shuai Hall on the east axis and Bremine Exhibition Hall on the west axis. The purpose of building a wall around the academy and putting up a protection sign in front of the main entrance is to carry forward the excellent cultural heritage of ancient times. Yanglan Hot Spring: Yanglan Hot Spring is located in the canyon of Yanglan Town, Danzhou City, Hainan Province, 12 kilometers away from Danzhou City. The hot spring belt is 6 kilometers long and 5 meters wide. Within 2 square kilometers, there are more than a dozen natural springs with a daily gravity flow of more than 2 tons. The water temperature is 78.4 degrees, the content of metasilicic acid and fluorine reaches the naming standard of medical mineral water, the oxygen content reaches the mineral water concentration standard, and it contains zinc, strontium, lithium, bromine and other trace elements necessary for human body. It has the characteristics of high temperature, constancy, constancy and no peculiar smell.