I have been working on printing my 3D Catan board using catan-style boardgame 2.0 (magnetic & multicolor) pioneered by Dakanzala. I have seen some Game of Thrones Castles around on Thingiverse but for the first time I have gathered them all together in one basket. Some of these are direct copies of hexagonal inlays ready for using with his magnet system, others I had to format on Tinkercad and combine with other objects. Several options are listed including files with holes for Catan numbers and files of just the castles on the hex's. I tried my best to list all the sources, but if I missed anything don't sue me, just let me know.

I'm excited to print and paint these so picture updates will be forthcoming. I was thinking of using these castles as a substitution for the hex tile with the lowest probability of the following resources. Furthermore, I may make a house rule (scary I know) where if you build on a castle tile you collect your resource as normal but you must choose someone else to collect the same resource or you have to discard/pay a tax of one of any resource in your hand or maybe just draw 1 more than usual.

Mine - Brick - Red Keep
Pasture – Sheep (Wool) - The Twins
Forest - Wood (Lumber) - Winterfell
Field - Hay (Wheat/Grain for you nerds) - Qarth
Mountains – Rock (Ore) - Casterly Rock
Desert – None - Mereen
Water – None - Dragonstone

I really wish there was a Highgarden model for grain or sheep so if one of you talented blokes could whip that up I would add it to the collection (I’m more of a mash it together kind of guy). Still working on the Eyrie and Dragonstone and I thought Castle Black would look kinda goofy with the wall and everything so I didn’t render a hex tile yet but it is listed here nonetheless. If there are any other good Game of Thrones Castle stl’s out there I missed please dm me!

catan-style boardgame 2.0 (magnetic & multicolor)
https://www.thingiverse.com/thing:2525047
Catan 2.0 Wood with GOT Winterfell
https://www.thingiverse.com/thing:3072396
Catan 2.0 brick GOT kings landing red keep
https://www.thingiverse.com/thing:3077449
Qarth Castle
https://www.thingiverse.com/thing:1625189
Mereen Castle
https://www.thingiverse.com/thing:1627044
The Twins from Intro
https://www.thingiverse.com/thing:2863382
The Twins Castle
https://www.tinkercad.com/things/bNy9sLaNf02-the-twins-castle
Catan 2.0 Ore Casterly Rock
https://www.thingiverse.com/thing:3073127
Terrain Tiles for Board Games
https://www.thingiverse.com/thing:3945230
Dragonstone
https://www.myminifactory.com/object/3d-print-dragonstone-87204
The Red Keep - Game of Thrones
https://www.myminifactory.com/object/3d-print-the-red-keep-game-of-thrones-94533
King's Landing - Game of Thrones (Multicolor)
https://www.myminifactory.com/object/3d-print-king-s-landing-game-of-thrones-multicolor-91292
Pentos Castle
https://www.thingiverse.com/thing:1627048
Castle Black Magnetic
https://www.thingiverse.com/thing:3079490
The Wall - Game of Thrones (Multicolor)
https://www.myminifactory.com/object/3d-print-the-wall-game-of-thrones-multicolor-91371
Eyrie_Game_of_Thrones
https://www.thingiverse.com/thing:3540316/files
The Eyrie
https://www.tinkercad.com/things/5FSIxNYZnXA-the-eyrie
The Eyrie (Hollow)
https://www.tinkercad.com/things/jrSS6xVZxb7-the-eyrie-hollow
The Tower Of Joy - Game Of Thrones
https://www.myminifactory.com/object/3d-print-the-tower-of-joy-game-of-thrones-40728
base_landscape for those too lazy to find the base set mentioned in the title...

See my other unique resource variants:

1.Mine - Brick
https://www.thingiverse.com/thing:4157621
2.Pasture - Sheep
https://www.thingiverse.com/thing:4157609
3.Woods - Lumber
https://www.thingiverse.com/thing:4116437
4.Fields - Hay
https://www.thingiverse.com/thing:4211885
5.Mountains - Ore
https://www.thingiverse.com/thing:4211589
6.Desert - None
https://www.thingiverse.com/thing:4211915
7.Water - Borders
https://www.thingiverse.com/thing:4213402
8.Castles - Game of Thrones
https://www.thingiverse.com/thing:4108358

"MAGNETS: You need to insert magnets into the bases and superglue the plugs after them. You need a total of 222 magnets with a diameter of 3mm and a length of 6mm. You should use diametrical magnets (poles on curved faces) because their orientation doesn't matter, making assembly easier." ~ Dakanzla

Diametrical (poles on curved faces) magnets:https://www.aliexpress.com/item/500-pcs-NdFeB-Thin-Magnet-Rod-Dia-3x6-mm-Diametrically-Precision-Magnet-Neodymium-Magnets-Sensor-Rare/32770059462.html