As a history teacher for two decades now, the single best field trip I've ever taken with students involved a visit to a "local" Wal-Mart in Albuquerque, New Mexico. During the 1990s, when I lived and taught in the urban desert, the Duke City served as a prime example of urban sprawl run amuck, with box store chains routinely popping up on every corner like mushrooms after a late summer rain. As part of our exploration of late 20th century globalization, my sophomores and I decided we'd take an official tour of Wal-Mart. We'd been reading essays fairly critical of the Bentonville-based company, so we decided we'd get the official Wal-Mart party line straight from the horse's mouth. After calling the store to set up a visit, we walked across the mesa to have a look inside the world's largest corporation.