As for tourism, its probably the tech (flight?) that gives tourism for any culture on improvements. Or was it a civic? ^^"So the Civilopedia entry for the Kampung says "Additional Production, Housing, and Tourism as you advance through the Tech and Civic trees".
But then in the traits section shows +1 production at Civil Engineering but makes no mention of Housing and Tourism.
Do you get extra housing and tourism - how much? and when? I think the Civilopedia is just there to drive me crazy!