Three Borders

In the town of Iguazu, there is a point called the "three borders" where you can overlook the rivers Parana and Iguazu and see Brazil and Paraguay. The proximity to these countries meant some of the tightest bus security we have encountered. For the first time, we had to have our bags x-rayed by a mobile x-ray van before we boarded the bus. I sat next to a guy from Portugal who told me that this was an effort to prevent drug trafficking because of the proximity to Paraguay. My sister talked to him as well, and he apparently made one too many jokes, leading her to believe that he may have known from personal experience.
The bus made multiple stops at customs check points along the way. Sometimes agents would board the bus and look around, other times the dogs would inspect some of the luggage. I was always surprised after we drove for twenty minutes or thirty minutes when we would come to another check point. Judging from our fellow passenger, however, it may have very well been necessary.
The following pictures are Argentina, Brazil, and Paraguay (respectively).