Villages are common but when they spawn so tightly combined that’s one example when they become unique. Here’s a perfect example of that. In this seed you will be able to explore two double villages that have been generated just next to each other.
Once you’ve spawned you will see a mesa biome and a well in front of you. Go to your right and follow the border of the mesa biome until you can see the beginning of the first double village across a river.
The first double village has one blacksmith with some decent loot worth picking up.
To find the next double village just continue straight through the first one and you should be able to spot the second one which is located very close.
It’s a really cool seed because the villages have been generated in a very hilly landscape which causes some of the houses and farms to be glitched in the mountains.