I have been to the Temple of Heaven twice. The first time I went there was a few months ago (April 2006) and I found that the main hall, (Hall of Prayer for Good Harvests) to my disappointment, was being renovated, perhaps something to do with the 2008 Olympics. When I came back, I could trace the scent of paint. The new hall was impressively fixed, although to be perfectly honest, it is a bit difficult to appreciate because it didn't seem authentic anymore.