This is Alice Finch and her 400,000-piece LEGO replica (including interiors!) of the Hogwarts School of Witchcraft and Wizardry. If I was six, and that was in my house, my parents wouldn't even have to hire a babysitter. They could leave knives and bleach right out on the kitchen floor and I wouldn't even notice.
The Brothers Brick has an interview with Finch about her massive Hogwarts, which won both the Best in Show and People's Choice awards at BrickCon 2012. Finch spent 12 months assembling the campus, combining elements from the books and movies to create a complete structure inside and out.
I posted a handful of different rooms after the jump, but you really need to go see Alice's Flickr gallery so you can appreciate them all in high-res. I remember I had the biggest LEGO castle they made when I was growing up, and that was nooooothing compared to this. It was still fun though. Or at least until my dog started eating pieces off of it. Then I'd follow her around the yard until they came out and I'd think about reclaiming them but mostly just wanted to see all the weird colors. THAT'S WHAT YOU DO WHEN YOU'RE A KID GROWING UP IN ALABAMA.
Hit the jump for more including the Great Hall, potions room, Room of Requirement, Chamber of Secrets, Dumbledore's study and I forget what else.
Thanks to Dayton, who said he made a LEGO replica of Hogwarts with only one brick painted really intricately. Okaaaaaay. And to Jason L, who has eaten over 500,000 LEGO bricks.