This is almost like a real life version of the Night at the Museum movie starring Ben Stiller, but minus the dinosaurs coming to life (so far). Called "Dino Snores for grown ups", the Natural History Museum hosts monthly all-nighters where you get to watch a science show, horror movies, listen to live music and of course, wander round the exhibits. Take a sleeping bag and camp under the museum's blue whale skeleton, plus there is a bar open till 1 am, a three course dinner and a hot cooked breakfast. It's like camping out in the woods but way, way better.