Sierra Cyclone

Definitely not for anyone who is afraid of heights. The heart-pounding thrill starts even before you get on the ride when during the queue, there's nothing between the transparent, acrylic catwalk that you're standing on and the ground a hundred or so feet below.

And then once you get on the ride, the adrenaline only continues with a ~110 ft (~33.6m) beyond vertical drop right out of the station and a vertical loop wrapping around the first of 2 launches that catapults riders 56 mph (90.1 km/h) into some spaghetti bowl action. After a second launch into some more inversions and a powerful descent back down the hillside, riders reach a top speed of 71 mph just before the end of the ride.