Question 1

Where is 3rd Battery Ruins?

Accepted Answer

3rd Battery Ruins is in Wakayama, Wakayama Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Summer Time Rendering does 3rd Battery Ruins appear in?

Accepted Answer

3rd Battery Ruins appears in EP6 of Summer Time Rendering.

Question 3

Can I visit 3rd Battery Ruins?

Accepted Answer

Yes. 3rd Battery Ruins is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Summer Time Rendering filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and 3rd Battery Ruins is one of those real places (EP6).