Located in Sakai City, Osaka Prefecture, the Mozu Mounded Tombs are one of the largest and best preserved groups of tombs in Japan. They are also a UNESCO World Heritage Site.
What are the Mozu Mounded Tombs?
A large number of mounded tombs were built during the Kofun Period (late 3rd to 6th century). The largest, Nintoku-tenno-ryo Kofun, is believed to be the final resting place of the fourth century Emperor Nintoku, though the exact location of his grave is unknown. Shaped like a keyhole, it measures about 800 meters long and 600 meters wide, including its moats.

Tightly controlled by the Imperial Household Agency, the kofun itself is considered a sacred site and public access is not permitted. You can go up to the torii gate at the tomb’s entrance. Here, guides offer 5-10 minute explanations about the tomb’s history and geography. Nearby, there’s also a stone replica of Emperor Nintoku’s tomb. The tomb can be viewed from the 21st Floor Observation Lobby at Sakai City Hall.
Mozu Mounded Tombs Visitor Center
For those interested in learning even more about the tombs, a visit to the Mozu Mounded Tombs Visitor Center is a must. Inside, you’ll find an exhibition corner, a theater, and a souvenir shop offering local omiyage.
Sakai City Museum

Sakai City Museum is a 3-minute walk away from the visitor center, in Daisen Park. Having opened in 1980, the museum showcases Sakai’s history through history, art, and archeology. In addition to the main museum, there is a tea house, central library, and Japanese garden. Admission is ¥200 for adults, ¥100 for university and high school students, and ¥50 for elementary and junior high students.
Note: the museum will be closed for renovation from November 4, 2025 to March 31, 2026.
How to get there
The Mozu Tombs are an 8-minute walk from Mozu Station on the JR Hanwa Line. Since Tennōji Station is also on the JR Hanwa Line, it’s a direct journey that takes just 26 minutes and costs ¥230 for those traveling from there.
If you are coming from Sakai Station, you will need to take a bus going towards Kitanoda Station from Sakai Station South Exit. You will need to get off at Mikunigaoka Station and walk 15 minutes. The overall journey takes around 18 minutes and costs ¥250.
- 399 m from Mozu Station Hanwa Line (R30)
- 0.8 km from Mikunigaoka Station Hanwa Line (R29)