Verb conjugation of "avistar" in Spanish

Everybody knows about the Indian summer which is famous for it strong and shiny atmosphere in the woods. That is why i wanted to see it too. So, last Saturday morning we left Boston and drove North-West.
Anyway, once we arrived at the guest house the rules were explained: Washing my Jeans would be 2 dollars, a pair of socks 1 dollar and so on. I did not feel comfortable with these people.
On the way we visited many small hill tribe villages. The walk was through green, wet rice fields. We really enjoyed it. Our guide explained us about the region and taught us some Vietnamese.