The baths consisted of two large geothermal pools in enclosed courtyards - one each for juveniles and adults - with a two-storey entrance foyer and tearooms at the front. In contrast to the segregated bathing that had occurred previously, they allowed mixed swimming for men and women and included other activities such as diving. Designed by the government architect J.T. Mair, the visual appearance of the building alluded to exotic pleasures as well as democratic modernity through the use of a Spanish Mission style and elements of Moderne architecture. Its break with tradition was underlined through its contrast with the nearby timber-framed Bath House, and by incorporating radical new elements such as arc lamps and underwater lighting. With family activity encouraged, the baths saw a number of social and sporting events, including Christmas carnivals and swimming championships. Local schools frequently used the facilities, with many people learning how to swim there. Initially extremely popular, the baths were in decline by 1955, when positive attitudes towards geothermal bathing had reversed and the pools filled with standard water in response to fears about health. The baths were eventually closed in 1982, and lay empty until being refurbished with modifications in 1999-2000.
The Blue Baths building is nationally and internationally significant for its associations with the history of tourism, and for its rarity as a building type. The building is unique as a Spanish Mission-style geothermal baths in New Zealand, and highly unusual in an international context. The structure has considerable value for its associations with government involvement in leisure and health, and demonstrates important changes in the development of the spa concept. The building is extremely valuable for its well-preserved nature, embodying changing social attitudes to class, gender relations and family life, as well as 'active leisure' and sport. The building is associated with prominent personalities, including Joseph Ward and J.T. Mair. Its design is significant for reflecting a move in public buildings from British architectural models to those incorporating American and international influences, itself part of a broader cultural shift. It also incorporates Maori influences, such as in a carved face above its main door, which was one of the first times the Crown made reference to Maori in the design of a public building. The building enjoys considerable public esteem as a prominent and aesthetic landmark, located in a public park. It is important as part of a late nineteenth- and early twentieth-century landscape and registered historic area - the Government Gardens - which includes associated structures, buried archaeological remains, historic plantings and geothermal features. It is of particular value for its proximity to the Bath House - constructed earlier in the twentieth century - demonstrating changing attitudes to tourism and health, and their relationship to architecture over a comparatively short space of time.











