Akiyama Underground Bunker (Tateyama Naval Air Group)
Tateyama Kaigun Kokutai Akayama Chikago Ato
One of Japan's largest underground spaces, spanning approximately 1.6 km.Explore this spot
The Akiyama Underground Bunker (Tateyama Naval Air Group) is a massive underground facility located in Tateyama City, Chiba Prefecture.
What makes it special
About Akiyama Underground Bunker (Tateyama Naval Air Group)
- Experience the immense scale of a historical underground space firsthand.
- Observe the structural remains of a military facility through maintained pathways.
- Walk through a unique historical environment (please be mindful of footing/safety).
- Purchase unique souvenirs like postcards and clear files at the reception.
- Always check the official status beforehand, as access may change due to weather or safety inspections.
Weather forecast
Wed
8/5
30°/24°
10%
Thu
8/6
29°/25°
76%
Fri
8/7
30°/27°
69%
Sat
8/8
29°/25°
22%
Sun
8/9
29°/25°
53%
Mon
8/10
28°/24°
25%
Tue
8/11
26°/22°
29%
Tips
Payment
Cash only (via ticket machine)
English Support
Limited English availability (signs/notices only)
Reservations
Groups of 20 or more require advance booking
Clothing/Items
Wear comfortable walking shoes; helmet and inner cap are mandatory
Photography
Be careful not to damage the facility or structures while filming/taking photos
Accessibility
Difficult for wheelchairs due to narrow and uneven paths
Etiquette
Eating, drinking, smoking, and use of fire are strictly prohibited inside the bunker