Hi, I've noticed a lot of Britfags are still in denial about Kalos. So I've decided to educate you a little.

Firstly, the place on the map that you all seem to think is Stonehenge, is actually Carnac in Brittany. It is not inspired by Stonehenge directly, if it is, it's only inspired indirectly as Stonehenge is one of many circles of standing stones. The shapes are in-accurate and the stones in X/Y do not have stones lying across the top of them. Secondly, the place on the map where the Carnac stones are located is completely accurate with the map of x/y. There is no way that this is not Brittany.

Now here's where it gets a little too confusing for the average English person to follow: Both Carnac and the side of mainland Britain are settlements of Britonia. They are Briton settlements, but hold your horses little guy! This doesn't mean that Britain is in X/Y. Breton is actually the Celtic language spoken in Brittany - that's right! The same place from before! In France!

So what does this mean? Britain is not the inspiration for any part of X/Y, Stonehenge is irrelevant (QQ), and the inspiration for that area of Kalos is definitely only based on the Carnac stones, in Carnac, in France. If you closely look at the overhead view of the stones, there is a squarish formation at the top that they have obviously decided to replace with a more circular formation. Furthermore, the menhirs are definitely not British menhirs. They are based on either the Manio Giant, or the Kerloas menhir (closer in shape and comparative size).

This area of X/Y was undoubtedly inspired by Celtic culture, but Britain was not the first place in the world to have Celtic culture. Game Freak did not have to look at anything remotely British to find total inspiration for this place, it's all self contained in Brittany, the birthplace of Breton.

TL;DR: This game is far more Brittany-ish than British, and the closest that Britain will ever get to Pokemon is still Stoutland.