This week, we’re loving the world’s 15 coolest “cat cafes,” as they’re purrfect (sorry!) for a cup of coffee. Meanwhile, fans of a certain bespectacled wizard will adore subtle Harry Potter tattoos. And why not check out a selection of surprisingly smart NFL players – they’re not all muscle, you know! – and some equally brainy rock stars? Finally, don’t miss awesome data centers, crazy animal mating, and an old toilet that’s been repurposed as a sandwich shop. Nice.