In ancient times, the coastal plain at Kālia was fed by streams from the Ko‘olau Mountains, including the Pi‘inaio Stream and several freshwater springs, and early Hawaiian farmers developed complex irrigation systems that turned marshes into lo‘i kalo and loko i‘a. Taro was the staple food and spiritual center for ancient Hawaiians, while productive fishponds and abundant coral reefs provided fresh seafood, and ho‘okipa held that passers-by, whether friends or strangers, were always welcome and fed. In the early 19th century, social and political change brought by Western contact altered this intricate way of life, and foreign diseases and epidemics decimated the native population. By 1866, Waikīkī was noted as a historic area with remnants of an ancient village, and over the next century it evolved into a resort area. In 1955, industrialist Henry J. Kaiser opened the Hawaiian Village with twenty-four thatched roof guest houses, three ocean water swimming pools, and a long house modeled after a Polynesian chief’s dwelling, while the Hilton Lagoon was created by dredging and filling former mud flats where shrimp had once been plentiful. In 1961, Conrad Hilton acquired Kaiser’s interest in the property and began expanding the present-day Hilton Hawaiian Village Beach Resort and Spa. The Barefoot Bar became familiar through the television series Hawaiian Eye, and in 1968 Millard Sheets created the Rainbow Tower’s two murals, each using over 8,000 ceramic tiles and later recognized by the Guinness Book of World Records as the largest in the world.