Ma'ili, Oahu
Ma'ili is a small community on Oahu's leeward coast, located between Nanakuli and Wai'anae. It has a nice long white-sand beach, Ma'ili Beach Park. In the Hawaiian language, ma'ili means "pebbly," referring to the shoreline's rounded stones.
Located in Ma'ili is the Naval Radio Transmitter Facility Lualualei (NRTF Lualualei). The two tallest masts are 1,503 feet (458 m) tall. When they were built in 1972, they were the tallest man-made structure in the Western Hemisphere at the time.
The facility is used to transmit high and low frequency radio signals to communicate with Navy vessels including submarines throughout the Pacific. Both the Navy and the Coast Guard use this facility.