Sakai Gov. Office Observatory (堺市役所展望ロビー) is one of the popular tourist spot in Sakai, Osaka. It is on 21st floor that is 80m high and has great panorama view of Sakai. This is the only public place that you can see Kofun from high angle. There is a cafe on the observatory.
Tourist Info.
There parking and restroom.
Admission: Free.
Open: 9:00 to 21:00
Access
0. at Sakai Higashi Station.
1. walk (2 min.)
1 hr.
Let's learn MJER Iaijutsu. 
映画好き集まれ！ 
The altitude of the observatory is 80m high from the sea level. It has 360 degree panorama view. This observatory is the only public place that you can see Kofun from high angle. You can also see down town Osaka.
Cafe Mieeru
Check out Goryo Curry, aka Kofun Curry.