Which Theme Park has the most number of roller coasters?

Cedar Point in Sandusky, OH has 17 Roller Coasters. Six Flags Magic Mountain in Los Angeles, CA has 16 and will debut its 17th roller coaster in the summer of 2010. Cedar Point is working on its 18th coaster, but it won't come out before the new one at Six Flags Magic Mountain. That means the record will be shared for a while, but Cedar Point will take it away soon.