I would definately not classify it as boring,.. the Great Wall (or walls as it is not a single wall) is one of my favourite man made places. I concede however, that those who have no interest in history and are not intrigued by what went before us might find it boring…

Go there and see for yourself, but try to go, as others have suggested, early in the morning. I would also suggest going to sites other than those most commonly proposed by the tourist industry.

Hope this helps you.