We went there on a Saturday and they had their Telecom's fundraiser (at least that's how I understood it from the guide's description, might have been people were just asked to do it?) where people climbed a large section of the wall, so it was extremely crowded. It was also very polluted with poor visibility. But the Wall is great, the views are great, and the toboggan ride down is definitely something very fun and to remember.
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