We only went to rokko sanjo station and stopped at the tenren observatory. It was a chilly day and very windy so we decided not to keep going. You have to pay a few transfers to get up to the first observation point. We took a bus to rokkomichi, and then paid for the cable car. If u wanted to keep going, u would have to pay for another cable car or bus. The cost adds up. While the view was nice (and likely nicer at night or sunset), there was nothing immediately to do outside of rokko sanjo. The one cafe was closed that day… there were no touristy shops or trinket shops or eateries nearby (might be a good thing depending on who you talk to)… and i found interesting that the area around the observatory was unkempt - weeds and dead leaves growing. I just find that unusual given that other touristy spots are very well maintained and greenery is always consistently manicured. We went on a weekday and perhaps it is busier and livelier on weekends. Admittedly we did not venture further up where there seems to be more touristy things (a tourist info center, a garden, possibly hiking opps), but we werent sure whether it would be worth paying more to risk things being closed since we were there mid afternoon and the weather was not super permitting.
Do check the weather forecast unlike me. Took the tram up because it was foggy and drizzling. Then decided to take the bus to R07 Garden Terrace. Proceeded to hike up via road to this summit. 40minutes one way.
There are also trails leading to the summit, but they start and end on the paved road.
Starting from one side of the mountain and hiking towards Arima Onsen is you best bet. Try not to do it the opposite and follow through with the hike to a train station. Don't use a bus, they are a pain in the nuts to ride lol. Buses are expensive and you can get motion sickness from them turning left and right every minute. Kids were barfing in bags on the way back. lol! I recommend hiking in the fall, the foliage is beautiful and you might run into a boar or two, plus the insects aren't so bad.
