I've got the (2,6,4) phrase but that only narrows the possibilities down to 36 places. I thought of Bank because Andy Lemon = Money Land but that doesn't satisfy my (2,6,4).
Of course, for the landmarks, five letters must be changed before they are revealed. A nudge or a big shove would be appreciated. Are the 5 letters together or scattered? Are there real words still in the grid after the changes? Word lengths? Symmetrical or otherwise? Thanks.