Perspectives: Castle

Why am I posting this image on Perspectives Friday?  I just like it.  This is the Smithsonian Castle on the Washington DC Mall.  I've seen it many times, and been in it once.  Every time I see it, I admire it, and I wonder what is inside.

The other thing I love about this picture is how people are relaxing on the grass.  Just makes me want to do that (although I think I took the picture as we were relaxing on a bench - much the same thing).