This is Glastonbury Abbey in Sommerset, England. As you can see, it's still quite pretty despite having failed utterly in its overriding purpose of not become uninhabited, desolate ruins. That said, you should see the other buildings made in the 7th century. Oh wait - you can't!
Here is the website of the place. [Insert "website made before the invention of the internet" joke here.]
Another picture after the break.
Another picture after the break.