It's 19 years later!!! Pottermore released a virtual tour of Hogwarts in celebration of today (the day of the HP epilogue).
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LoginHaven't gone through the whole thing yet (very quickly scrolled through so I could write an article on it) but it's pretty neat so far. My only complaint is that you don't go inside the castle. I would LOVE a nice, in-depth tour of Hogwarts - something like the LEGO games where you get to just wander around. I'm sure it's a huge undertaking but think of how awesome it would be.