Cascades Amphitheater
open-air theater in Ridgefield, Washington

Cascades Amphitheater, formerly known as the RV Inn Style Resorts Amphitheater Sleep Country Amphitheater, Amphitheater Northwest, and the Sunlight Supply Amphitheater (originally The Amphitheater at Clark County and commonly Clark County Amphitheater), is an 18,000-seat capacity amphitheater, located in Ridgefield, Washington. It holds 7,810 covered seats and lawn seating for about 10,000.
It is the largest outdoor amphitheater in the Portland metropolitan area. It is used for concerts, stage shows and other special events, including the Clark County Fair. Construction started in 2002, with Sustaita Architects designing the venue and Hoffman Construction Company building it.
History
After its opening in 2003, it operated at a $1 million to $3 million loss through 2008. On July 10, 2009, Coldplay became the first music act to sell out the venue. The Amphitheater at Clark County was renamed Sleep Country Amphitheater in March 2010 after the parent company of Sleep Country USA acquired the naming rights, initially for three years. That contract having expired (and not been renewed), the facility was renamed Amphitheater Northwest in January 2015. This name ended up being temporary, as the venue's owners were reported to be seeking a new sponsor.
Begin with the source’s own compact description: “Cascades Amphitheater” is open-air theater in Ridgefield, Washington. The dossier treats that line as a proposition to test through Cascades, Amphitheater and open-air, not as a finished interpretation.
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The phrase “open-air theater in Ridgefield, Washington” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Object files, edition statements, performance records and contemporary criticism preserve different stages of the work’s history. The source revision retrieved here is dated Aug 30, 2026. The linked authority identifier is Q7539680. Authority coordinates are 45.743, -122.667. 3 of 3 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2002, 2003, 2008 and 2009.
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This entry incorporates text from “Cascades Amphitheater” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.