The initial website has a "domain parker" feel to it. I think the colours/design are off. Just my opinion though.
The loading times (especially for the map) seemed long for a production website. The longer I use your site (the more searches I do) the more annoying this feels.
There is good data on here for near where I live.
We're paying $15/month to host it on a small slice, and we've been working hard to make it work on few resources so that we can scale it up inexpensively.
That said, I'm getting to the point where I just want to throw a dedicated server at the problem. The site runs smoking fast on our internal Linux server.
We also need to do more caching. We made a lot of progress on this (like if you click a national park the data is cached and fast), but in general, map loads need to be snappier.
One interesting thing to note is the bigger your browser window, the slower the site.