What is a border? It's a line on a map, a place where cultures mix and merge in beautiful, sometimes violent and occasionally ridiculous ways. And a border wall? An overly simplistic response to that complexity, says architect Ronald Rael. In a moving, visual talk, Rael reimagines the physical barrier that divides the United States and Mexico -- sharing satirical, serious works of art inspired by the borderlands and showing us the border we don't see in the news. "There are not two sides defined by a wall. This is one landscape, divided," Rael says.

Ronald Rael: An architect's subversive reimagining of the US-Mexico border wall

An architect's subversive reimagining of the US-Mexico border wall

"Prada Marfa" exemplifies how architecture at borders can communicate complex, satirical insights into wealth and identity.

A teeter-totter at the US-Mexico border symbolizes how actions on one side directly affect the other, urging unity over division.

Border walls, ancient in concept, provoke diverse modern responses, from art to engineering challenges, reshaping perceptions.