The woman in question is Alice Finch and she built the replica for BrickCon 2012. Yes there is a convention for fans, collectors, and builders of lego, OHMYGOD. But I digress. Alice not only built a stunning lego replica of Hogwarts but one that includes all the interiors. The Brothers Brick breathlessly note that it ‘just might be the largest LEGO structure built by a single person’.