Ride about 150 miles east of Seattle, WA to enjoy this view on Badger Mountain Road, east of where US Highway 2 follows the Columbia River. Another couple of hours gets you to the Grand Coulee Dam. Click on the Google Map below.
"Grand Coulee Dam forms Lake Roosevelt, extending 151 miles upstream to the Canadian border. It has a 600-mile shoreline and a surface area of 82,000 acres. In 1948, Congress designated Lake Roosevelt National Recreation Area, which is operated by the National Park Service.
Grand Coulee Dam provides water to irrigate approximately 600,000 acres in the Columbia Basin Project. In addition to its irrigation and power functions, Grand Coulee Dam is a primary factor in controlling the floods on the Columbia River."
"Grand Coulee's laser light show, One River, Many Voices, is held nightly at Grand Coulee Dam starting the Saturday of Memorial Day Weekend through September 30. The show lasts about 30 minutes and is free of charge."
Accommodations near Grand Coulee are few. Steamboat Rock State Park has campsites and cabins. "After a day of discovery, your tent, RV or cabin site will be a welcoming place to watch the evening glow. ... Steamboat Rock State Park is a 5,043-acre camping park with 50,000 feet of freshwater shoreline at the north end of Banks Lake and a columnar, basaltic rock with a surface area of 600 acres. Three campground areas and a large day-use area are protected from winds by tall poplars." https://parks.state.wa.us/590/Steamboat-Rock