Question 1

Where is Mt. Hakodate Observatory?

Accepted Answer

Mt. Hakodate Observatory is in Hakodate, Oshima Subprefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of ERASED does Mt. Hakodate Observatory appear in?

Accepted Answer

Mt. Hakodate Observatory appears in EP8 of ERASED.

Question 3

Can I visit Mt. Hakodate Observatory?

Accepted Answer

Yes. Mt. Hakodate Observatory is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was ERASED filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Mt. Hakodate Observatory is one of those real places (EP8).