They had both exterior and interior designs.
Team Zopherus from Rogers, Arkansas, was the first-place winner of Phase 3: Level 1 of NASA's 3D-Printed Habitat Challenge. The team's design includes using a moving printer that deploys rovers to retrieve local materials.
They had three dome-shaped structures. It includes a hydroponic garden and a large, spiderlike robot that would function as both a lander and a 3D printer.