A video of the gold album ceremony and a short interview with Hansi (in German only) can be seen here.
According to Wikipedia, Blind Guardian had intended to record a DVD since early 1998, however, due to the band’s high requirements, no existing metal festival had been considered suitable. Instead, the band decided to create their own festival, back in their homeland. The First Blind Guardian Festival was held in Coburg, Germany, at June 16–17, 2003. It lasted 2 days, with the band playing during both nights. The entire show has been professionally recorded and subsequently released on a DVD entitled Imaginations through the Looking Glass on June 14, 2004.
A BraveWords review of the Imaginations Through The Looking Glass can be read here.