I've been asked to produce an IA for a large travel company and specifically the groupings of destinations.
I have: by country THEN by state region THEN by capital city and major population center (if applicable)
I have also split the IA so that there is a shortcut menu 'popular destinations' which are ad-hoc, popular countries such as USA/UK and /or capital city or things like 'north africa' 'caribbean' etc etc.
I've been trying to find consensus online but the evidence stops at the region / state level where a huge amount of variation comes in.
How should I organise the IA? Am I on track? Anything I'm missing? Is there any published research I can look at?
notes: selection of destination will be by mega menu or drop down. Maps not in spec.
edit: I'm not so interested in the mode of interaction but the amount of destinations and their organisation to include in the IA. edit 2: it turns out that region definitions vary depending on the activity; huge variation and enormously hard to legislate for. Would you advocate stopping at nationally recognised state/region definitions?