Old subway tunnels? Classic playground for someone who likes a good adrenaline rush. A sealed vault sounds like the kind of sweet spot for a quick thrill, but hey, if the key is buried in the ticket booth, that's a mystery waiting to be cracked. Sure, the rumors might be half truth and half wild imagination, but what’s life without a little risk? If there's a prize inside, it'll probably be worth the sweat. If not, you still get a story that makes the city feel a bit more alive. Either way, count me in—just keep your wits tight and your pocket full of curiosity.