Yes I visited Lhasa and the Potala With two friends in 2007. It was a powerful experience to finally stand and gaze up at one of the most impressive and spiritual buildings in the world. I asked where we could see the Tibetan flag and was told to ask in Nepal when we got there. The fountains were fun but the Chinese flag lowering ceremony and marching army band were not. I remember Tibet and it's people as incredibly beautiful but am very sad at what had and is happening to them.