This cache is part of a series of caches in this area. They can be done individually, but if you are planning on spending an afternoon (or more!) hunting for these, it is recommended that you start (Dushu Lake Swans [GC6HJHB]) and then go on to Dushu Lake Water Source (GC6HJJQ). From there, you can go onto Mei's Scenic Tour of Egret Park (GC6JWAK) which will take you through the park and find the four caches in the park (GC6JK0H, GC6J6HP, GC6HR3F & GC6HZDW). If you have time when you finish, continue on to Half Moon Spot (GC6J6F4) and Heart of the Circular Square (GC6J6FQ).
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An incredibly popular and busy location - particularly for wedding photos. Come here on a weekend and fight your way throught the brides, grooms and accompanying camera crews posing in front of the church, the lake, the flowers, the sculptures and anything else they can find. The cross, just a short distance out from the shore, is a particularly attractive for pics.
The church itself is an operational church, insofar as churches in China operate.
26 June 2016 (update): replaced the cache with a new container which might make it a little easier to find if you're looking in the right place.