Nusantara, Indonesia’s developing new capital city in East Kalimantan, has successfully planted over 2,000 trees in a single day, establishing a new national record. The large-scale reforestation effort aims to bolster the environmental sustainability of the ambitious project. This initiative highlights the government’s commitment to balancing urban development with ecological preservation. Organizers coordinated volunteers from various sectors to participate in the tree-planting event. The chosen species are native to Borneo, further supporting biodiversity. This record-breaking planting contributes to Nusantara’s vision of becoming a smart, sustainable, and environmentally friendly city. The event demonstrates Indonesia’s dedication to combating climate change and promoting green infrastructure.