Mars colony with domed gardens and spaceport by Duncan Li

Picture of the Day 31/8/2018 - Human colony on Mars with domed gardens and a spaceport by Australian concept artist Duncan Li. More of his art here.

(Open link in new tab to view ⇩ in full resolution)

Space station orbiting Mars by Brad Wright

Picture of the Day 20/2/2018 - Space station orbiting Mars by British concept artist Brad Wright. More of his art here.

(Open link in new tab to view ⇩ in full resolution)

SpaceX ITS spaceships at Mars Base Alpha by Maciej Rebisz

Picture of the Day 12/7/2017 - SpaceX ITS spaceships at Mars Base Alpha or "Alpha Site" by Polish digital painter Maciej Rebisz. More of his art here.

(Open link in new tab to view ⇩ in full resolution)

Some close-ups of the painting:

Space station orbiting Mars by Ville Ericsson

Picture of the Day 28/2/2017 - An international space station orbiting Mars by Swedish concept artist Ville Ericsson.
More of his fantasy art here.

Space station in Mars orbit by Glenn Clovis

Picture of the Day 22/12/2016 - "Phoenix" space station in Mars orbit by sci-fi artist Glenn Clovis. More of his art here.

(Open link in new tab to view ⇩ in full resolution)

Mars colony by Pete Ashford

Picture of the Day 6/4/14 - A drawing "Welcome to Mars" (2010) by Pete Ashford from United Kingdom.