Help Sightseeing log bugged??

[Rongway]

thanks that might be it, I still miss 2 in the 1 - 20 range. I will try that first.

That's definitely it in this case. Spots 21-80 won't even acknowledge that you're standing on a vista if you haven't finished 1-20 yet. The other expansions are like that too. If there aren't slots added to your sightseeing log, those vistas aren't available.