I ended up sitting for some time looking at Baccus and Ariadne by Titian. That online image doesn't begin to do it justice: it's astonishing, I had tears in my eyes.
I know anyone living in England probably has been there; I've been before myself. I just think sometimes we forget how incredible it all is. If we didn't have this privilege, and suddenly we got it, what an impact it would have. Because I hadn't planned to go there, it hit me quite strongly.
For those who haven't been to the National some highlights here.