A comprehensive, searchable database with information and statistics on over 1800 roller coasters throughout the world.
Contains information and over 2,000 original roller coaster pictures from approximately 100 amusement parks:
An organization dedicated to the enjoyment and preservation of roller coasters.
Not sure if this group has a physical location you can visit.
Pictures of Cedar Point ride construction
Unofficial website devoted to the railroad circling Cedar Point
A slideshow of vintage photos
Everything Six Flags Great America
A guide to Kings Island
Claims to be the top fan site for Cedar Point information
An unofficial guide to Cedar Point Ausement Park
Celebrating and sharing the history of the Marriott's GREAT AMERICA parks (Gurnee, IL and Santa Clara, CA)
Cedar Point information, forums and photos