Nogales is right on the Mexican border and is dominated by a huge wooden wall that follows the mountains and valleys like the Great Wall of China. The appearance is generally run-down, with broken signs and empty lots.
Family ties are strong, often with relations on both sides of the border.
Some of its lobby pedestals are missing the original Aztec sculptures. I learned an incredible amount about how children of different ages behave and how to keep their attention. I was generally disappointed by the lack of knowledge and boredom in grades 4-6. But they have heard of dry ice. Nearly everyone says that there is no gravity in space.