Roller Coasters are often the main attraction at Theme Parks and Amusement parks. They routinely draw in crowds of thrill-seekers looking for a scary adrenaline-filled experience that they won't soon forget. But what elevates a Coaster from an entertaining joy ride to a jaw-dropping mind-blowing must-try experience? Is it the heart-pounding acceleration of the launch? Is it the stomach-sinking first drop or the crazy inversions? Or is it a combination of these factors blended together devilishly with break-neck speed and unnerving airtime? In this list we feature some of the biggest, baddest, fastest and scariest roller coasters across the world. Some of them are record breakers, others are deceptively frightening owing to their wooden construction - but all of them have what it takes to be on every coaster fanatic's scary hall of fame. Go through the list to experience the incredible POV videos included and let us know by ranking the list which ones you think deserve to be on top (pun intended)!