Haixing Road West Baishamen Park. According to Baidu map, the playground in Baishamen Park is very interesting and can be circled. Located in Baishamen Park, Haixing West Road. Haikou, also known as "Coconut City", the capital city of Hainan, is located in the tropics and consists of Hainan Island, Haidian Island and Xinbu Island.