The City and County of Honolulu is the local government for the island of Oahu in Hawaii. It encompasses the city of Honolulu, which is the state capital and the largest city in Hawaii. The government structure combines both city and county functions, making it unique in the United States. Honolulu is known for its beautiful beaches, such as Waikiki Beach, and significant landmarks like Diamond Head and Pearl Harbor. The city serves as a cultural and economic hub, attracting tourists and residents alike with its diverse population and rich history.