<P> Cape Disappointment, part of the Lewis and Clark National and State Historical Parks west of Ilwaco, was the westernmost terminus for the Lewis and Clark Expedition, and a monument designed by Maya Lin as part of the Confluence Project was dedicated there in 2005 . </P> <P> The Long Beach Peninsula is known for its continuous sand beaches on the Pacific Ocean side, 28 miles (45 km) in extent, claimed to be the longest beach in the United States . Because of the fine beaches, it is a popular vacation destination for people from Seattle, Washington, 165 miles (266 km) distant, and Portland, Oregon, 115 miles (185 km) distant . </P> <P> The peninsula is located entirely within Pacific County, Washington . </P> <P> The principal industry of the Long Beach Peninsula has become tourism, though fishing, crabbing, oyster farming, and cranberry farming are also important components of the local economy . The Long Beach Peninsula is located on the west side of the Willapa Bay, considered the number one producer of farmed oysters in the United States and among the top five producers worldwide . </P>

Which state is the home to the longest beach in the united states