TIPOLOGIA PASO GRANDE 1 trump wallEstudio 3.14’s vision for Donald Trump’s proposed wall along the Mexico-US border.Agustin Avalos/Estudio 314

Less than a week after his inauguration, President Donald Trump has said he will make good on his promise to build a wall along the US-Mexico border and block immigrants from entering the US illegally.

“Big day planned on NATIONAL SECURITY tomorrow,” he tweeted Tuesday. “Among many other things, we will build the wall!”

But what would Trump’s proposed wall look like in reality?

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 most likely wouldn’t foster positive relations with Mexico, and the mountainous terrain would make construction difficult.

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

CNBC’s Kate Drew wrote that the construction could cost the US government $15 billion to $25 billion. Maintenance and hiring 21,000 border-patrol agents could cost an additional $2.1 billion a year, according to CNBC and an analysis by Politico. (Trump has said Mexico would pay for the wall through taxes or trade.) Estudio 3.14 designed the renderings around these estimates.

Here’s what its renderings suggest Trump’s wall could look like:

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