Tethered balloon
Sakai, Japan
October 2025
The Sakai (Osaka) balloon offers aerial views of the ancient Kofun burial mounds, a UNESCO World Heritage Site. The most famous, the Daisen Kofun burial mound, is considered the largest individual tomb in the world. Shaped like a keyhole, it is 486 meters long and is believed to be the tomb of Emperor Nintoku, who reigned in the 5th century.