NASA has begun stage one of three, one-year simulated missions at Johnson Space Center in Houston, TX. As part of the Mars Dune Alpha mission research project includes a 1,700 sq.ft., 3D-printed habitat. The structure named Mars Dune Alpha, was designed by a collaborative between BIG-Bjarke Ingles Group of Copenhagen, DK and ICON of Austin, TX USA. For more, visit Architect.com.
Mars Dune Alpha at Johnson Space Center 
Mars Dune Alpha/Plan View
Sources: https://big.dk and https://www.iconbuild.com