The first women's pavilion at a world's fair was established at the Centennial Exhibition in 1876 in Philadelphia thanks to the work of the Women's Centennial Executive Committee. Like pavilions at subsequent world's fairs, the pavilion in Philadelphia displayed inventions by women – which often related to the household – and labour-saving household utensils, furniture, rational dress and handiwork.
Centennial Exhibition 1876 Philadelphia Scrapbook, The Centennial-The Women's Pavilion, drawing: Theo. R. Davis; source: Free Library of Philadelphia: Philadelphia, PA, item No: c180060, https://libwww.freelibrary.org/digital/item/2378, public domain.