Located in Athol, Idaho this theme park and water park is a hidden secret for this region. Silverwood's theme park is home to four roller coasters, including two top rated wooden coasters, Timber Terror and Tremors. Of course, there is also a full lineup of other rides and attractions for the family to enjoy, including a Carousel from the 1940s, games of chance, entertainment and delicious food. The neighboring water park is including with admission to the theme park and offers a place to cool off during the summer. Silverwood Theme Park is open seasonally May through early October.