Highway 101 is a major north-south highway that runs along the Pacific Coast of the United States. It is one of the oldest highways in the country, with its first sections being constructed in the early 1900s. The highway was initially built to connect the cities of San Francisco and Los Angeles, and since then it has been extended to run up the entire West Coast of the United States, passing through cities such as San Diego, Portland, and Seattle. Highway 101 has become an iconic symbol of the West Coast, and it is often featured in movies and television shows. It is also a popular tourist route, as it offers stunning views of the Pacific Ocean and the coastal mountains.