Not much else to say that hasn't been said already... THIS IS A FANTASTIC MUSEUM!
Here is the TL:DR version of why you should go:
1. It's free. Yes, IT'S FREE! I've paid more money for crappier collections of art. Thanks, members and private donors!
2. It's massive. You need at least 3+ hours. I ran out of time! But, since it's free, you can come back many times. It's a beautiful space, and a mix of old and new.
3. AWESOME assortment of art. Do you like period crafts? Do you like coats of armor? Do you like modern art? Do you like master works? THEY HAVE IT ALL!
4. Affordable and veggie-friendly cafe, and a gift shop with unique products.
A great way to spend an afternoon!