A spring as well as a scenic and historic destination. The area includes wooded pathways, streams, bamboo groves, tea houses, historic structures, as well as the spring itself and other sights. Admission is ¥15. Tea brewed with the high-quality Tiger Spring water may be purchased for about ¥20 a glass.
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皇山公园 Yuhuang Shan Gong Yuan
One of the least-visited sites in Hangzhou despite its somewhat central location. The main temple on top of the hill offers a wonderful view of the city and lake below, and has a restaurant next door. There is another temple partway up the hill. The area can provide a quiet escape and a nice hike, as well as the chance to visit one of the few Daoist sites in the area (most other local temples are Buddhist). It is located directly south of Leifeng Pagoda. The main entrance isn't far from the Silk Museum. If you are playing along with the "10 Scenes of the West Lake" scavenger hunt still, the one that applies to the top of this hill is "clouds flying over Jade Emperor Hill".
龙井茶园 Long Jing Cha Yuan
Longjing and other tea fields further west are best visited during the harvest period, usually from the first week of March till after May Holiday, when everyone is out in the field picking tea and the tea that you can purchase is of the best quality (tea crops from later in the year have had their leaves damaged by the rain). Entrance to the fields is free of charge.
Lin Biao Hangzhou Palace (林彪杭州行宮)
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.
花港观鱼, Huagangguanyu
Its famous points are fishes, flowers and ponds.
南屏晚钟, Nanpingwanzhong
A powerful bell in a temple on a mountain, rung at dusk. One does not need to visit the bell, it can be heard across the lake.
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.