pejzaĝo. Where does this come from; at a loss as to how to memorize it.
If you know Spanish país (country) and the common French suffix -age, that's how. Actually, just now, I correctly predicted the existence of the Spanish word "paisaje" - Googled it and it seems to exist.
when is it 'ci tiu' and when 'tiu ci'?
No difference. Note the hat over the C in both those expressions.