Location Status: UNdecided - World War II Memorial or National ZOO?

I am planning to be sketching in DC tomorrow.  I am leaning toward the WWII Memorial, but I thought it might be nice to change things up a bit and visit the ZOO.  I am inviting you to chime in and vote on a location.

I don't know who took this photo, but I think it is AWESOME.

You might recall the story of the Mama Tiger who adopted and nursed a litter of piglets.

Isn't NATURE GRAND!