Welcome to Great Coasters International!Great Coasters International, Inc. offers the smoothest, most twisted, and highest quality wooden roller coaster attractions in the world. Our staff of engineers, project coordinators, and field construction supervisors has earned the reputation of being the most conscientious in the business. Our attention to detail makes the addition of a GCII wooden coaster a solid investment. It is an investment with a company that views itself as your partner, offering a lifetime of service and support after the attraction is open.