A border wall that features a library, burrito stand, rainwater filtration system and a solar farm? That's the idea of one Cal-Berkeley professor.
Here is a summary of his ideas:
Here are links to the architectural drawings of the proposal:
And there is a YouTube video above where you can listen to Rael explaining his ideas.
I don't expect the Department of Homeland Security to be giving him a contract anytime soon but the ideas and drawings are thought-provoking considering the border wall has become such a symbol of the massive border buildup of the last decade-plus.