Ok, watch your steps, something that seems like an endless meadow just turn out to be an artistic outdoor installation.
At first he thought it would be a challenge because there were just grass there and nothing else, so he thought why not just grab a shuffle and make an underground city. After 8 hard-working days his installation turned out to be rooftop-gardens of tall buildings that are in a way built into the ground. The tunnels between each building has room for an average person to pass by.
Check out all the images below for more information about EVOL Underground City.