There are two reasons why you can’t just BASE jump off any old city building: firstly, it's illegal for, like, a thousand reasons, and secondly, even if illegality and self-preservation aren’t concerns for you, you'd struggle to know how to go about it. That’s because BASE jumping is a somewhat secretive world - if someone knew how or when to get around security and jump off a certain building, they'd never tell you, as they'd be both turning themselves in and handing over all their hard-earned secrets. So now that we've crushed your adrenalin junky dreams, here are five buildings you can still launch yourself off (albeit shackled to a freedom-reining cord).