Moku'aikaua Church, across Ali'i Drive from Hulihe'e Palace, is the oldest Christian church in Hawaii. Built in 1837 from lava stone and ohia wood, it has been in continuous use ever since. The interior is simple and cool, with exposed timber trusses and a model of the brig Thaddeus that brought the first missionaries from New England in 1820.
The church is still an active congregation and holds regular services. Visitors are welcome during the day. The building and its history are a reminder that Kailua-Kona was where the transformation of Hawaiian society was set in motion — the first missionaries landing on this bay, the kapu system just abolished, the kingdom one generation from collapse.