Borderwall as Architecture is a biographical account of the physical barrier that divides the United States of America from the United Mexican States. It is also a protest against the wall and a projection about its future through a series of propositions suggesting that the nearly seven hundred miles of wall is an opportunity for economic and social development along the border that encourages its conceptual and physical dismantling. The book makes this case by taking readers on a journey along a wall that cuts through a “third nation”—the Divided States of America. Along this journey the transformative effects of the wall on people, animals, and the natural and built landscape are exposed and called into question through the story of people who, on both sides of the border, transform the wall, challenging its existence in remarkably creative ways. Coupled with these real-life accounts are unsolicited counterproposals for the wall, created by Rael’s studio, that reimagine, hyperbolize, or question the wall and its construction, cost, performance, and meaning. These artistic proposals emerge from the proposition that despite the intended use of the wall, which is to keep people out and away, the wall is instead an attractor, engaging both sides in a common dialogue. Included is a collection of reflections on the wall and its consequences by leading experts Michael Dear, Norma Iglesias-Prieto, Marcello Di Cintio, and Teddy Cruz.