I think it would be best if you guys will go out of Europe and into Asia and Oceana.
Auckland intl is a great start. Or shanghai Pudong. I bet they will sell a whole lot. Even Kuala Lampur intl will be outstanding!
but one scenery that might probably give one of the best selling is Guilin international airport.
why? look. Guilin airport is a casual one
but the whole city and the whole surrounding area is this:
I bet you would get a best seller if you make the whole area and the airport modeled as it is.
it would be astonishing.