Inyoseki Shrine  (map)
One of the oddest sights in all of Miyazaki , this shrine boasts a rock naturally shaped like a phallus. There’s also a small museum (enter at your own risk). Back in its day it was a great attraction for newly-weds and those trying to have kids. Free entry.

Cosmo Dome Planetarium (map)
For the starry-eyed out there, visit the planetarium for one of the indoor screenings, or go for a live nighttime star viewing and mythology explanation. 
This is currently closed, no notice on when it will be reopened.
TEL: 0984-27-2468  

Mamako Waterfall (須木の滝) (map)
Legend has it that a mother jumped over the fall with her child, hence the name “Mother and Child.” Despite the sad story, this fall is a very beautiful sight.

Suki Falls 
A beautiful waterfall and campground in Suki Village just outside of Kobayashi! You can walk across a bridge and get a fantastic view of the falls. Particularly beautiful with fall foliage, don’t miss out!
Location: 967-61 Sukishimoda, Kobayashi-shi, Miyazaki-ken, Japan (map)

Sannomiya Gorge (map)
About a 10 to 15 minute drive heading toward Suki and the same turn-off as Inyoseki. A very nice walk through a 1km series of 11 rock tunnels. Don’t miss out.