Carousels.com
Site features news, auctions, chat, etc. about carousels.

InCoasterPædia
"The Internet Roller Coaster Encyclopædia", reference database on roller coasters.

The Internet Roller Coaster Poll
Annual poll from the rec.roller-coaster Usenet newsgroup.

ParkTrains
Site about amusement park railroads and trains.

Roller Coaster Database
Database of coaster statistics.

Roller Coasters: Inventing the Scream Machine
Online exhibit from Encyclopedia Britannica.

See Also:

Bibliography: Carousels
Bibliography: Park and Roller Coaster Videos
Bibliography: Roller Coasters
Links: Carousel Museums
Links: Theme Parks, Waterparks, & Zoos