Guide
The Tropical Environmental Museum (commonly known as Green Dome Nettaikan) is an indoor botanical garden in Itabashi, Tokyo, designed to recreate the tropical environments of Southeast Asia. The facility spans from the basement to the second floor, showcasing various ecosystems such as tropical intertidal zones, lowland forests, human settlements, and high-altitude regions. The basement features a mini-aquarium with marine, brackish, and freshwater species, while the upper floors host greenhouses filled with over 300 types of tropical plants. It is a unique space where you can feel the humidity and biodiversity of the tropics right in the heart of the city.
The facility is characterized by its eco-friendly design, utilizing residual heat from the Itabashi Incineration Plant. Opened in September 1994, the museum's theme is deeply connected to Southeast Asian nature and culture, stemming from the friendly ties between Itabashi City and the Penang State Government in Malaysia. Following a renewal in 2021, the environment has been further enhanced to provide a deeper understanding of tropical ecosystems.
The museum offers a different charm at every level, from the basement to the top floor.
This area recreates Southeast Asian aquatic ecosystems, displaying approximately 2,500 creatures across 150 species, including marine, brackish, and freshwater fish. Visitors can observe species such as the Asian Arowana, large tropical fish, and colorful coral reef fish.
The first floor features the "Intertidal Vegetation" area with mangroves and Nipa palms, the "Tropical Lowland Forest" with towering trees, and a "Settlement Landscape" featuring a traditional Malay house with a Nipa palm roof. This area illustrates the natural environment that supports tropical lifestyles and useful plant resources.
The 2F "Cloud Forest" is a specialized area for high-altitude tropical plants. Because it is a cool room, it offers a refreshing environment even in summer, featuring plants like Rhododendrons, Orchids, and Nepenthes (pitcher plants). The special exhibition room also hosts seasonal learning programs regarding tropical ecosystems and environmental conservation.
Since the facility is divided into temperature-controlled zones (aquarium, greenhouse, and cool room), it is a comfortable destination regardless of the season. If you are looking to escape the summer heat, the 2F "Cloud Forest" is highly recommended. Additionally, on Saturdays, Sundays, and public holidays, the cafe "Clair" serves delicious Asian cuisine, such as Malaysian curry and Nasi Goreng, allowing you to enjoy a tropical dining experience.
Deepen your understanding of nature through regular events and specialized displays. For example, the museum hosts exhibitions like the "Amazon Exhibition" (focusing on aquatic plant layouts) and occasionally offers workshops such as "Glass Aquarium Making" (reservation required; additional fee applies). The library corner also provides a wealth of books regarding tropical rainforests, plants, and Southeast Asia for deeper study.
The Takashimadaira area is rich in nature, with several community parks and green spaces nearby. Local commercial facilities and seasonal events, such as the Takashimadaira Marche, also offer great options for your visit.
Some areas of the museum are kept at high humidity and temperature to replicate tropical environments. Breathable, lightweight clothing is recommended. For moving through the underground aquarium and greenhouses, comfortable walking shoes are advised.