Denver Art Museum

While on my photowalk in Denver one morning, I came across the Denver Art Museum.  I like art museums and they are usually fairly interesting.  This one was awesome - well, at least the outside.  It wasn't open at 6am and I was hunting for photo opps anyways.  It has this great design and is very modern, which I like quite a bit.  Sometime if I make it back up there I'll have to check out the exhibits.  By the way, the blue hour up in Denver seemed to last forever.  At home in Austin, I get 15 minutes or so but in Denver it really felt like about an hour.  I find that curious - any ideas why?