This antique stretch of highway draws visitors from around the world. The plush rainforests of the Columbia Gorge, combined with breathtaking views, provide some of the best natural entertainment in the country. Construction began in 1913 and was completed in 1922, but by the 1950s, the scenic route was becoming obsolete as a main thoroughfare. What is left of the highway has been renovated by the state and converted into a lovely trail linked with bridges and tunnels.