Question 1

Where is Hitsujiyama Park?

Accepted Answer

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

Question 2

Which scene of Anohana: The Flower We Saw That Day does Hitsujiyama Park appear in?

Accepted Answer

Hitsujiyama Park appears in OP1 of Anohana: The Flower We Saw That Day.

Question 3

Can I visit Hitsujiyama Park?

Accepted Answer

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

Question 4

Where was Anohana: The Flower We Saw That Day filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Hitsujiyama Park is one of those real places (OP1).