This is a remarkable Instructable. That’s right; if you want to build this then the instructions are online, 16 steps in all, a lot of work but a truly impressive game of Settlers of Catan at the end.
How does it work? Magnets. You guessed right. Hundreds and hundreds of magnets.
Why build it? As the creator Penfold Plant suggested;
Do you want to make a great centerpiece for your board game sessions? Do you ever look at the surface of your game table and think it’s a little plane? Do you love Settlers of Catan, but sometimes wish it could be a bit less Euclidean? Then wrap your head around this…