Hello! I added something to my build again... but now this leads to an other planet! (Some Boundless theme addition.)
The middle bridge leads to the portal.
The portal to Munteen VII.
And this is where you can go, the Iron Island.
A closer look.
Inside, the portal room, with one open and one "frozen" portal (maybe will be open).
The ancient "generators" fuel the engines to make the island fly!
Up, in the portal garden, those portals will lead to 4 good hunting/mining locations on Munteen.
The ancient engines defy the laws of physics! Some oortian "magic" they say.
Do not fall down, its high above.
And last some view. In the first you can see @Jeffrotheswell 's portal hub in the cemetery field. And of course other far away builds.
Thanks for everyone who helped me with their trades, and special thanks to @Miakodae and her friends to give me more than half of the iron blocks I needed!