Question 1

Where is Akiha Shrine?

Accepted Answer

Akiha Shrine is in Takayama, Gifu Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Hyouka does Akiha Shrine appear in?

Accepted Answer

Akiha Shrine appears in OP of Hyouka.

Question 3

Can I visit Akiha Shrine?

Accepted Answer

Yes. Akiha Shrine is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Hyouka filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Akiha Shrine is one of those real places (OP).