Mexican designers show that Trump's proposed $21 billion wall would be nearly impossible to build

Nearly two months into his presidency, President Trump is chipping away at his promise to build a wall along the Mexico-US border. His administration put out an open call for designs in March, and will announce in June the 10 companies it wants to hire to build prototypes.

Over 700 companies expressed interest, though not all were expected to submit bids.

Though they didn't officially submit, Mexican architects from Estudio 3.14, a design firm based in Guadalajara, imagined a hot pink border that stretches 1,954 miles, called the "Prison-Wall."

The renderings are meant to show the impracticality of building the wall, designer Norberto Miranda told Business Insider. He says the border likely wouldn't foster positive relations with Mexico, and the country's rolling mountain ranges would make construction difficult.

As many others have pointed out, the wall would also be expensive, and Mexican President Enrique Peña Nieto said his country would never pay for it.

The US Department of Homeland Security says the total cost of the border wall project could be around $21.6 billion. Estudio 3.14 designed the renderings around this estimate.

Check them out below.