is there another land you can get too or how do you lvl once you get past 45?

I preordered the 360 version (which isn't as fully featured as the PC version) from Amazon a while back, I'm hoping it'll arrive mid-August. Really looking forward to this one, mainly because I loved Oblivion but particularly because there's no level cap and one character can learn every skill, so no real class restrictions.

If it's as good as I hope it'll be then that's 400 hours of gaming which will save me buying any more games until around Christmas.