The western area of Arizona has been designated as a coast due to the Colorado River, which is responsible for much of Arizona's western border with Nevada and California. Visitors to West Coast Arizona enjoy the activities and amenities of Lake Havasu City, a center known for the London Bridge that spans the Bridgewater Channel from the mainland to an island in the Colorado River. This bridge once crossed the Thames in England, and was dismantled and rebuilt in Lake Havasu City in 1971, spawning an English Village at the foot of the bridge that offers attractions and shops with a distinct British style. Bullhead City is also located on Arizona's West Coast, and is the site of the annual Hardyville Days, a community celebration that features live entertainment, a petting zoo and more. Yuma is another West Arizona town, and is a popular destination for RV enthusiasts looking to escape the cold of a northern winter.