Offering more than 100 rides, Paramounts Carowinds Theme Park, in Charlotte, North Carolina, has something for every thrill threshold. Situated near the border between North and South Carolina, this park attracts big crowds from both states. Carowinds' tallest coaster is BORG Assimilator, the world's first coaster with a 'Star Trek' theme. Other high-speed attractions include the 50-mph stand-up Vortex, the four-G Jet Coaster and the ominously named Hurler.