Kūkaniloko Birth Site, also known as the Kūkaniloko Birthstones State Monument, near the intersection of Kamehameha Highway and Whitmore Avenue just north of Wahiawā, Hawaiʻi, is one of the most important ancient cultural sites on the island of Oʻahu. It was first listed on the National Register of Historic Places in 1973 and its boundaries were increased in 1995, after 5 acres (20,000 m) of land including it became a State park in 1992.