A secret military command center built by Lin Biao in April 1970, hence the name "704" project. The underground tunnels cover more than with many heavy doors that could withstand nuclear and gas attack, and an elevator that directly reaches Lin Biao's bedroom.
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花港观鱼, Huagangguanyu
Its famous points are fishes, flowers and ponds.
This is more than 3 km long and one road west of the Su Causeway. It starts at the intersection of Beishan and Shuguang Road (which becomes Yanggong Causeway once you are south of this intersection); the causeway runs north-south. Yanggong Causeway includes Quyuan Garden (aka Qu Garden aka Qu Courtyard), which is the most popular spot to see tons of lotus blossoms (late spring > summer). The water area to the west of the top of Yanggong Causeway is Maojiabu Scenic area, with orchids blended into the water scenery. Another tourist spot on Yanggong Causeway is Mr. Guo's Villa, which was built in 1907 and is considered one of the most "classical" gardens in Hangzhou. At the southern end of the causeway, just before Nanshan Road, is a fish-viewing pond.
苏堤春晓 Sūdīchūnxiǎo
Almost 3 km long, the Su causeway dates from the year 1189 and has a bunch of willows and peach trees. It is long north-south causeway that starts by the Shangri-La on Beishan Road and goes all the way down to Nanshan Road.
曲院风荷, Quyuanfenghe
At the west of West Lake, just in front of the Yuemiao (岳庙), in it there are a lot of shops.
双峰插云 Shuāngfēngchāyún
The view of the highest mountains north and south of the lake, which can rise above the clouds.
Xihu
Hangzhou's most famous scenic sight. It is traditional to see the 10 Scenes of the West Lake and 10 New Scenes, and thousands of the visitors dutifully do so every year. However, these particular sites are overrated, and often seasonal (Snowfall Over Broken Bridge, etc.). Rather than make a checklist and walking back and forth looking for them, simply spend a clear day wandering the circumference of the lake and the causeways, take a ferry to the islands, and you will probably cover most of the sites anyway. The lake is quite large: the walk around it is about 12 km long.