NASA announced the projects to enter the third phase of their 3D printed Mars habitat competition. Here you can see some amazing technological concepts. Hopefully I'll see some of them being used on Mars sometime in the future.
NASA page with more details:
https://www.nasa.gov/directorates/spacetech/centennial_challenges/3DPHab/five-teams-win-a-share-of-100000-in-virtual-modeling-stage
Team Zopherus
AI SpaceFactory MARSHA
Kahn-Yates Construction
SEArch+/Apis Cor
Northwestern University
NASA page with more details:
https://www.nasa.gov/directorates/spacetech/centennial_challenges/3DPHab/five-teams-win-a-share-of-100000-in-virtual-modeling-stage