Saturday fun activity: Where IS this?

    There are Saturdays when I feel, "I've really got 'em stumped this time."
    This won't be one of those Saturdays. 
     I can't be the only person who saw this place and thought, "Wow, look at that building!" 
    So I imagine others were floored as well. 
    Where is this place? 
    I've collected some information about it—I thought of writing a separate building profile. But Saturday rolled around, and I need something. 
    I also need a prize. Can't send books out every week.  I need to save those to fling at prominent people who probably never see them. And just thinking about the posters makes me wretch.  How about ... a ... an....
     Why not something intangible? How about publicity? The winner gets his event or cause or opinion or beloved cat ballyhooed on my blog on their own unique post. That's different, and perhaps even desirable. One dose of exposure to my thousands of daily readers. 
    Or, if that doesn't work, there's always a blog poster. I still have to get rid of the damn things. 
    Place your guesses below. Good luck.