If I won that kind of money I would set my parents up for life.
I'd prolly have to hire someone so I don't make bad investments. I'd move to a place where it was warm all the time but had awesome internet lol. I'd want to be near the ocean. I'd want my house to be semi-isolated but be close enough to the city that I can get to help or food if needed.
I'd travel the world and visit the different places I've read about in books. I've been to the different cemeteries in Anne Rice's Vampire Chronicles. I'd want to visit the places that inspired the works of Jane Austen, Piers Anthony, Stephen King, some of the other Anne Rice books, Marion Zimmer Bradley, etc.