It was my first time crossing the border south to the US of A. And it was a short trip - 3 days to a business conference. I only had a few hours to go walking around. Most of the time i was deep into the corporate world. But u know...what happens at the conference...i have to report about it to my superiors, not to the web. All in all, I barely had any time to get an actual pertinent opinion about DC, but it's definitely positive; a site worth seeing. It's one of those bucket list places. I would have loved to see much more of it.