The Daisen Kofun, visible from the lobby, is one of the world's largest tombs by base area, comparable to the Great Pyramid of Giza.
The 21st-floor observation deck offers clear views of the distant Akashi Kaikyo Bridge on days with high visibility.
The observatory is entirely free to enter for all members of the public.
From this height, the layout of the city reflects the historical grid system influenced by the medieval merchant prosperity of Sakai.
The Observatory Lobby atop the Sakai City Hall provides a 360-degree panoramic view of the city from 80 meters above ground. It is the highest point in Sakai, offering a direct line of sight to the Mozu-Furuichi Kofun Group, a UNESCO World Heritage site consisting of ancient burial mounds. The space features floor-to-ceiling glass windows and historical displays documenting the city's development. Visitors can observe the Daisen Kofun, the largest keyhole-shaped tomb in Japan, from a unique elevated perspective. The facility is located on the 21st floor of the municipal government building. The observatory serves as both a public viewpoint and an informational center for regional heritage.
The window facing the Daisen Kofun for the best aerial-style view of the keyhole-shaped burial mound.
Bring binoculars to better distinguish the shapes of the various Kofun burial mounds scattered across the landscape.
Check local weather reports beforehand, as visibility of the distant mountain ranges and bay area is highly dependent on clear skies.
Do not attempt to use tripods or professional lighting equipment as they may obstruct public pathways in the open lobby.
Closed during year-end and New Year holidays.
