The structures were designed by William Henry Gummer and Charles Reginald Ford, who were among the leading architects of their day. The Temperate and Tropical houses are barrel-vaulted steel and glass structures, arranged symmetrically on either side of the complex. They are separated by the enclosed courtyard, while the Fernery occupies a more irregular grotto setting to the rear. The courtyard contains a number of statues, added in 1945, and a sunken pond that was modified in 1954. Each structure within the Wintergardens was designed to display different types of flora, the Temperate House having exotic potted plants and the Tropical House more permanent plantings, such as banana and ravanela (traveller's palm). The fernery is notable for its display of New Zealand plants, some of which may have come from a collection that won the first Loder Cup in 1926. The cup was established by the New Zealand Institute of Horticulture to encourage the appreciation and cultivation of native flora.
The Domain Wintergardens are among the best-preserved examples of their kind in the country and are nationally significant for demonstrating early twentieth-century garden design. They demonstrate attitudes to the natural world at that time, including an interest in exotic flora 'discovered' during European colonial expansion. They are particularly important for reflecting changes in approach to flora during the 1920s, with a growing emphasis on New Zealand plants. The Wintergardens are also significant for their association with the Auckland Industrial, Agricultural and Mining Exhibition, and the role of public parks as places of education and recreation. They are important for showing the architectural versatility of Gummer and Ford, and the value placed on public buildings in the early twentieth century. They have connections with other historic structures in the park - including the nearby rotunda, tea kiosk and Auckland War Memorial Museum - and enjoy high public esteem as popular and much-visited buildings.










