From their website: "Mona spaces are beautiful social worlds for you to collect, show your art, and gather with others. ""What Is A Space?""A ‘Space’ is a 3D virtual social environment that can be viewed in a web browser.
Builders are able to create spaces using free tools like Unity and Blender, or other applications like Maya, Gravity sketch and many other tools that create digital content.
Each Space is minted as an NFT, and can be bought and sold much like any other NFT. If you are the owner of a space you can use Token Gated access to only allow users you want to enter the space.
A Space does not"

From their website: "Dia is a constellation of eleven locations and sites...​Dia Art Foundation is committed to advancing, realizing, and preserving the vision of artists. Dia fulfills its mission by commissioning single artist projects, organizing exhibitions, realizing site-specific installations, and collecting in-depth the work of a focused group of artists of the 1960s and 1970s."

"Spiral Jetty is an earthwork sculpture constructed in April 1970 that is considered to be the most important work of American sculptor Rober Smithson." (Wikipedia)

In 3D design a normal map is a texture to make an object look more realistic. These videos demonstrate the concept and how to apply normal maps in blender. From the video description, learn about Normal Maps and "...its use in faking lighting calculations of a surface." These are commonly used to create a higher detail object with a smaller file size by "baking" the textures into the object.

SketchUp and Cinema4D are 3d design softwares used to build and render environments. From the article, "​When assessing the two solutions, reviewers found SketchUp easier to use and set up. However, reviewers felt that administration of both products was equally easy, and preferred doing business with Cinema 4D overall."