I stumbled upon this really cool hut called “La Trufa”. This very cool little house, built in Spain, is made by pouring concrete over hay bales. A cow, named Paulina (I’m not lying about this bit) then eats away at the hay, leaving this structure hay-free. See the pictures below of the hut and Paulina at work, and look at the stunning bathroom! You can also watch the video of how it was made here!
Images via Inhabitat