Question 1

Where is Hirosawa?

Accepted Answer

Hirosawa is in Wako, Saitama Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Steins;Gate 0 does Hirosawa appear in?

Accepted Answer

Hirosawa is a real place that appears in Steins;Gate 0.

Question 3

Can I visit Hirosawa?

Accepted Answer

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

Question 4

Where was Steins;Gate 0 filmed?

Accepted Answer

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