Russian Fort Elizabeth

Pā'ula'ula State Historical Park is a National Historic Landmark and is administered as the Pā'ula'ula State Historical Park just southeast of present-day Waimea on the island of Kauaʻi in Hawaiʻi. It is located at the site of the former Fort Elizavety, the last remaining Russian fort on the Hawaiian islands, built in the early 19th century by the Russian-American Company as the result of an alliance with High Chief Kaumualiʻi. The star fort was employed by the Kingdom of Hawaii in the 19th century under the name Fort Hipo.

Source: Wikipedia