The Royal Hawaiian Hotel, a pink beachfront landmark in Waikīkī on Oʻahu, emerged in the 1920s as part of a push by Matson Line and Castle and Cooke to make Hawaiʻi a luxury destination for steamship travelers. Opened in 1927 on the former Honolulu Seaside Hotel site, the six-story resort featured 400 rooms in an H-shaped plan and blended Spanish and Moorish revival design. It became a symbol of Hawaiʻi’s growing visitor industry, later served as a U.S. military rest center during World War II, and returned to civilian use under successive owners. Its enduring fame reflects both its architecture and its role in Waikīkī’s rise as a world-famous resort district.