Question 1

Where is Hinata Koba observatory?

Accepted Answer

Hinata Koba observatory is in Chino, Nagano, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of mono does Hinata Koba observatory appear in?

Accepted Answer

Hinata Koba observatory appears in EP2 of mono.

Question 3

Can I visit Hinata Koba observatory?

Accepted Answer

Yes. Hinata Koba observatory is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was mono filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Hinata Koba observatory is one of those real places (EP2).