Prague (LKPR)
Nicely developed terminal, close to the city of Prague (which could be populated with lots of interesting static buildings).
Phuket International Airport (VTSP)
Exotic location, nice surrounding scenery, needs some development work for 3d buildings still.
Santos-Dumont, Rio de Janeiro (SBRJ)
Strong second in the last poll, one of the bases of the very active Brazilian FG community, stunning scenery and well-developed airport with another major airport close by.
Zürich (LSZH)
Located close to the stunning alpine scenery of Switzerland, probably might need some finishing touches:
Anchorage (PANC)
The gateway to the Alaskan wilderness... stunning scenery half an hour away (Denali and the Alaska range just up north), needs some development
Hong Kong International Airport (VHHH)
Interesting scenery, also seems to need some development: