Don't confuse the town of Coulee City on the south shore of Banks Lake along a major US highway for Grand Coulee. The town with the dam is further north and in a more remote part of the state.
From the west: US Hwy 2 east to WA State Hwy 155 north. In the Seattle Metro area, there are short cuts to US Hwy 2 from Bothell on WA State Hwy 522, and Duvall (east of Redmond) on WA State Hwy 203. Otherwise, take the I-5 Fwy exit #194 in Everett. Distance from Seattle: 230 miles
From the east: US Hwy 2 west to WA State Hwy 174 west (but runs northwest). Distance from Spokane: 88 miles
Lake Lenore Caves, . These caves on the Grand Coulee were formed by water erosion on volcanic rock, which makes them geologically interesting.
Steamboat Rock State Park, (On the north shore of Banks Lake, 16 miles north of Coulee City.), .
Northrup Canyon. A homestead just north of Steamboat Rock.
Dry Falls Interpretive Center From US Hwy 2, turn at WA State Hwy 17 at the SW corner of Banks Lake, then 4 miles south. Just inside Sun Lakes State Park (below). During the last ice age, Dry Falls occasionally carried more water by volume than all the rivers of the world combined (known as the Missoula Flood). Admission is free.
Summer Falls State Park, (about 10 miles south of Coulee City), .
Sun Lakes State Park, (7 miles SW of Coulee City), . At the foot of Dry "Falls. Offers camping and lakefront shoreline.