I am fortunate that I have been to the Arctic and the Tropics, seen mountains and forests and deserts. Subhanullah, if this dunya is even a shadow of what lies in Jannah...
I have seen a lot of places, but not too many. The city that still makes me shudder to think of visiting is Makkah, of course.
And I haven't been everywhere, but the one thing I'd still really love to see, is:
Everything