Nothing beats that pure moment of ecstasy when your adrenaline kicks in and you feel like you’re on top of the world. These moments are amazing. You feel like you’re unstoppable—invincible even! But these moments can be pretty hard to plan. Lucky for you, we’ve got a list of six activities that will get your adrenaline pumping. And the best part? You can do them in some of the coolest places throughout the U.S.A.