Expo 2026 highlights the theme “Diversity of Life”, with themed areas designed in accordance with the three aforementioned subthemes.
The three main buildings are where the majority of indoor gardens and activities will be hosted. The Isaan Building will showcase the local wisdom of art, culture, and horticultural products, and the Lotus building is inspired by the famed wetland plant of Udon Thani, the red lotus. The Glasshouse will house both Thai and international gardens, along with various expo competitions.
The true spectacle of the expo will be in the outdoor garden areas: the Theme Garden, with flora and fauna artfully arranged to reflect the expo’s theme of diversity, alongside the International Outdoor Garden showcasing plant exhibitions from AIPH members and various countries, plus the vast Thai Tropical Garden, housing famed local fruit orchards, flowers, herbs, vegetables, and myriad members of the plant kingdom.