Starting this autumn, visitors to Osaka will be able to experience Japan’s ancient history from an entirely new perspective — the sky. A new sightseeing initiative will launch hot-air balloon flights over the Daisen Kofun, the country’s largest keyhole-shaped burial mound and the resting place believed to belong to Emperor Nintoku.
Located in Sakai City, Osaka Prefecture, the Daisen Kofun is part of the Mozu-Furuichi Kofun Group, a UNESCO World Heritage Site recognized for its cultural and historical significance. The kofun, constructed in the 5th century, stretches nearly 486 meters in length, making it one of the world’s largest tombs — even larger than Egypt’s Great Pyramid of Giza when measured by area.
Until now, the aerial view of the kofun — shaped like a keyhole when seen from above — has mostly been visible only through drone photography or airplane images. With the upcoming balloon tour program, participants will get a rare opportunity to see the intricate design of the tombs, surrounded by moats and lush greenery, up close and from a breathtaking height.
The project is organized by the Sakai City Tourism Bureau in collaboration with local aviation and cultural organizations. Trial flights will begin in late October, with plans to make it a permanent attraction depending on demand and weather conditions. Each flight will last approximately 15–20 minutes, lifting visitors about 50 meters above the ground — high enough to appreciate the stunning layout of the tumulus while preserving safety and cultural respect for the heritage site.
In addition to the balloon rides, visitors can explore nearby attractions such as the Sakai City Museum, which offers detailed exhibits on kofun-era history, ancient artifacts, and the construction techniques used to build the massive burial mounds. Local officials hope the new venture will boost both tourism and awareness of Osaka’s role as a cradle of Japan’s early imperial history.
“Viewing the Daisen Kofun from the sky gives people a deeper appreciation of its scale and the incredible craftsmanship of the Kofun period,” said a Sakai City representative. “We want both Japanese and international visitors to experience this world heritage in a memorable and respectful way.”
The balloon flights are expected to attract a wide range of travelers — from history enthusiasts and photographers to families seeking a unique weekend adventure. With clear autumn skies and vibrant seasonal colors, this launch promises a one-of-a-kind encounter between ancient legacy and modern exploration, right above one of Japan’s most mysterious monuments.
Source:https://www.nippon.com/en/news/yjj2025100300758/
