The butterfly dome houses roughly 1,000 butterflies representing about 10 different species at any given time.
The facility is situated within a forest conservation area that intentionally preserves native flora to support indigenous insect life cycles.
Research scientists at the facility regularly conduct field studies on local beetle and dragonfly populations.
The architectural design of the primary pavilion features a roof structure meant to mimic the wings of a butterfly.
The site hosts a specialized library focused exclusively on entomological research and academic texts.
Gunma Insect World is a sprawling 45-hectare biological research and educational facility located in the foothills of Mt. Akagi. The site is anchored by a large glass-enclosed butterfly dome that maintains a tropical climate year-round to support diverse species. It functions as both a public museum and an active research center focused on the ecology and biology of insects. Outdoor exhibition areas include walking trails designed to showcase local wild insect populations in their natural forest habitat. Educational programs often include insect-craft workshops and seasonal specimen displays. The facility is managed by the Gunma Prefectural government with a mission to foster environmental awareness. Its architecture integrates the buildings into the surrounding mountainous terrain to minimize habitat disruption.
The interior of the glass butterfly dome, particularly where sunlight creates patterns through the foliage.
Bring insect repellent for the outdoor walking trails, as they traverse natural forest areas.
Wear comfortable, sturdy walking shoes to navigate the sloping paths between the dome and forest zones.
Observe the signs carefully as many exhibits rotate based on the local seasonal emergence of specific insects.
Do not attempt to collect or capture any insects on the grounds, as the area is a protected research habitat.
Closed on Mondays; if a public holiday falls on a Monday, it closes the following day.
Refrain from touching the plants inside the butterfly dome to protect the delicate ecosystem.
