Large human base on Mars by Manchu (Philippe Bouchet)

Picture of the Day 12/1/2020 - lander landing at a large human base on Mars featuring several residential domes & greenhouses, solar array, tall communications antenna, light reconnaissance plane and enclosed landing pad. It's a concept art by French sci-fi artist Manchu (Philippe Bouchet) from French chapter of The Mars Society (Association Planète Mars).

Closeup of the central part of the base:

Astronauts returning to Mars colony by Ferdinand Ladera

Picture of the Day 13/12/2019 - exploration team returning to human colony on Mars by Filipino fantasy artist Ferdinand Ladera; illustration for The Expanse role-playing board game.

SpaceX Mars Base Alpha in late 2030s

A few hours ago SpaceX posted on their Flickr account 4K resolution versions of the previously released renders with the new design of Starship. Here is a closeup (open image link in new tab for best resolution) from one of them with Starship launching from Mars Base Alpha. According to our speculated Mars Colonization Timeline the first human base on Mars could be developed to the pictured level by late 2030s.

New cinematic trailer for Occupy Mars simulation game released

The Martian frontier is yours in Occupy Mars - the upcoming (as of today: Coming soon) highly technical open world simulation game about Mars colonization from Polish indie game developer Pyramid Games. In the game you will be able to "build and upgrade your base, discover new amazing regions, conduct mining operations, retrieve water and generate oxygen, grow crops, fix broken parts, learn how to survive on Mars!"

Here is the newest cinematic trailer of the game and beautiful HD images from it. Note the SpaceX's Starman style spacesuit and ITS v2016 Starship.

SpaceX ITS v2016 Starship landing at Mars base:

Assembling Mars base module by module:

Astronaut planting a tree in Mars biodome:

Mars base layout:

Mars colony construction from The Space Between Us movie

Picture of the Day 26/8/2019 - Construction site of a human colony with several domes on Mars from The Space Between Us (2017) - a teen romance movie about the first child born on Mars. More images from the movie here.

Domed park with central waterfall on Mars

Design of what could be a domed park with central, artificial waterfall and public space on Mars by Safdie Architects. These are design images for 1.3 billion $ Jewel Changi Airport project opened on April 2019 in Singapore. The Jewel is a connector hub for Singapore's Changi Airport terminals, designed in shape of glass & steel torus dome with world's tallest indoor waterfall in the center and multi-level marketplace & public space hidden inside gardens on the terraces and in canyons around it.

Shops and restaurants are well hidden inside gardens:

Mars colony by Mauricio Pampin

Picture of the Day 19/7/2019 - Mars colony with several interconnected geodesic domes by Canadian concept artist Mauricio Pampin. More of his art here.

Mars colony in artificial, domed canyon

Picture of the Day 4/7/2019 - design of what could be a human colony in a narrow, artificial, domed canyon on Mars by LAVA architects. This image was done for a design of Masdar City (next to Abu Dhabi, United Arab Emirates) - a futuristic sustainable city project in development and intended to be a hub for cleantech companies.

Human colony on Mars for Buzz Aldrin's "Welcome to Mars" book

Impressive cover art of human colony on Mars with several domes and parks for "Welcome to Mars: Making a Home on the Red Planet" book for kids. It was written by Marianne J. Dyson and Apollo 11 astronaut Buzz Aldrin (2nd on the Moon) and published in 2015 by National Geographic Children's Books.

Green Marsopolis by Annibale Siconolfi (Inward)

Cityscape of green Marsopolis with parks and large biodomes - a city on Mars in a far future by Italian futuristic 3D artist Annibale Siconolfi (Inward). More of his art here.

He has made also a different version - a bit depressing industrial Red Marsopolis.

1 million human colony city on Mars by Max Rymsha

On 2017 HP announced the "Mars Home Planet" rendering challenge inviting participants "to imagine, create and virtually experience a sophisticated civilization on Mars. A new home for one million humans." Swedish architect and CG artist Max Rymsha was one of the winners of the challenge creating his concept "Between The Red Mountains" for a sustainable city on Mars for 1 million humans. His inspiring vision includes several large-scale biodomes, SpaceX's Starships (in their 2016 design) for Earth-Mars transportation, hyperloop lines for intercity transportation, electric rovers and quadcopters for local transportation, laboratories of NASA, etc.; most of the city (not shown in the illustration) is underground for better radiation and asteroid protection.

Infographic version with annotations:

Mars colony by Alexey Shugurov

Picture of the Day 4/4/2019 - Astronaut trying to charge his ATV near a futuristic human colony on Mars by Ukrainian fantasy and space artist Alexey Shugurov. More of his art here.

Forest under a dome by Artur Rosa

Picture of the Day 24/3/2019 - Forest with a lake and human colony under a dome on Mars by Portuguese digital artist Artur Rosa. More of his art here.

Mars colony city by Bill Wright

Picture of the Day 6/3/2019 - Mars colony city under a dome by American retro space artist Bill Wright. More of his art here.

Mars base by Carles Marsal

Images of an early human base on Mars by Spanish digital artist Carles Marsal. More of his art here.

Full image of the base:

Mars dome interior by John Berkey

Picture of the Day 15/2/2019 - retro-futuristic illustration of what could be an interior view of a dome on Mars by classical future and space artist John Berkey. This illustration was done in 1975 as one of Otis Elevator Company adds. More of Berkey's art here.

Colony on Mars under plastic domes by Chesley Bonestell

Picture of the Day 3/2/2019 - "Colony on Mars under plastic domes" by classical space artist Chesley Bonestell, dubbed as "Father of Modern Space Art". More of his art here.

Mars colony dome painting by Blackbird Interactive

Picture of the Day 24/1/2019 - painting of Mars colony dome by Canadian game developer Blackbird Interactive (Brennan Massicotte) for its "Project Eagle" - a 3D interactive Mars base free to play on Steam and developed in collaboration with NASA’s Jet Propulsion Laboratory. The interactive base is intended as NASA's vision of what a human base on Mars would look like in 100 years.
Here are HD images from the project.

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

Farming in a dome on Mars by Mike Kiev

Picture of the Day 19/1/2019 - farming in a dome on Mars by Ukrainian photographer & illustrator Mike Kiev. More of his works here.

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

Closeup of the colony town in the background:

Mars colony apartment block

British The Sun has published an article what the human residences on Mars could look like by 2050 with architects and scientists prototyping several possible types of homes for would-be Martian colonists. All the designs are meant "to protect interplanetary homeowners from hazardous cosmic rays, space radiation and Mars' severe dust storms, as well as insulate them from the cold."

Here are images for the 2nd design - apartment block covered with Martian regolith.
Open link in new tab to view image in full resolution.

Interior of one of the apartments: