Genjuan is also a Tempel like the Shofukuji which he is somehow belonging.
It also it next to his big brother:
And what a surprise we were also not allowed to enter ^^

But it looked very beautiful from the outside :D
See my picture I made from the entrance:

And now a bit history:
This Tempel was built in 1336 and founded by Muin Genkai (a japanese monk).
First it was constructed on a different place under the support of Oga Sohaku (son of Oga Soku).
I can't say what this person especially did..my good friends google and wikipedia didn't want to help me...
But bouth Oda Sohaku and his father lye on the burial ground of the Tempel.
This information can be read on a sign next to the entrance.
Here is a picture of the original place which is near Chikusen (i think):