What began as a simple car that rolled down a hill, has evolved into an engineering marvel. Roller coasters are taller, faster and wilder than ever. The tallest is the size of a modern skyscraper. The fastest travels at nearly twice the highway speed limit.

So if they're so big and fast, intimidating and scary, then why do we ride roller coasters?

For thrill-seekers it's a love affair with the excitement a roller coaster offers. The moment we begin the first descent our body fills with adrenaline creating a "thrill-seeker high".

For others, a roller coaster is a scary experience. Tackling ones fears despite being scared is a challenge, that is as rewarding as it is exciting.

Whatever the reason, people love roller coasters and it's no surprise that they are the world's most popular amusement park ride.

Ultimate Rollercoaster is about discovering the excitement of the Roller Coaster. Here you'll learn everything you want to know about roller coasters.

Start with the storied history of this thrill ride. Then answer your curiosity of what is the tallest, fastest and longest roller coaster. You'll discover how they work and read reviews of a few of the world's best. And we might even inspire you to ride one or two after looking at photos of some of the coolest roller coasters on the planet.