As soon as you walk in, it feels like you’ve stepped into a tropical rainforest. It’s hot and humid inside, which is very different from the weather outside. There are lots of different animals, like monkeys and reptiles, and you can see them up close, which feels pretty unique.

Verified [Verified] denotes information that has been published with confirmation of its owing parties.
Kusatsu Tropical Wonderland
A zoo where you can interact with tropical and subtropical animals in a jungle dome recreated using heated spring water.
Opened in 1970 as “Japan’s top reptile park.” Centered around a 49-foot-tall, three-level jungle dome that recreates a subtropical environment using geothermal heat from the hot springs, the park is home to animals from subtropical and tropical regions.
The park is home to a wide variety of animals living in spacious surroundings, including crocodiles, capybaras, and ring-tailed lemurs. In addition to extensive reptile and amphibian exhibits, there is also an outdoor monkey mountain where you can enjoy watching monkeys relax in the hot springs. There are also many hands-on experiences for visitors, such as feeding capybaras and trying hand and foot baths with beauty fish. However, visitors should be careful not to put their hands or feet near the animal enclosures, and feeding is allowed only in areas clearly marked as permitted.
Because the park maintains a comfortable temperature year-round using hot spring heat, one of its biggest draws is that you can enjoy a tropical atmosphere even in winter. It is within walking distance of the Kusatsu Onsen hot spring district, making it an easy stop between sightseeing. This is a uniquely Kusatsu spot where a hot spring resort and a zoo come together.
Highlights
-
The 49-foot-tall jungle dome heated by hot spring energy is a must-see.
-
See a wide range of animals, including crocodiles, capybaras, and ring-tailed lemurs.
-
Try feeding capybaras and hand and foot baths with beauty fish.
-
Enjoy a tropical atmosphere in a comfortable temperature even in winter.
-
In July 2024, the “Fureai-kan” interaction hall opened, making it possible to interact with many animals.
Photos
-

Observe rare animals and plants inside the 49-foot-tall dome that recreates a subtropical environment
Official FAQs
Frequently Asked Questions have been vetted and answered directly by each listing.
Q
Is there free Wi-Fi available in the area?
No.
Q
Are there coin lockers?
Yes.
Q
Is re-entry allowed?
No.
Q
Is there a smoking area?
Yes, there is one.
Q
Are there tourist spots nearby?
Yes. (Yubatake, Sainokawara, etc.)
Reviews
Some reviews are AI-translated.
Details
- Name in Japanese
- 草津熱帯圏(くさつねったいけん)
- Postal Code
- 377-1711
- Address
- 286 Kusatsu, Kusatsu Town, Agatsuma District, Gunma
- Phone
- 0279-88-3271
- Closed on
- Open daily
- Hours
- 8:30am–5:00pm
- Admission
- Adults: 1,300 yen, high school students: 1,000 yen, children: 800 yen
- Access
- Approx. 12 minutes on foot from Kusatsu Onsen Bus Terminal
- Credit Cards
- Not accepted
- Official website
- Official website (Japanese)