Question 1

Where is Green Parking Lot?

Accepted Answer

Green Parking Lot is in Takaoka, Toyama Prefecture, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Oomuro-ke: Dear Friends does Green Parking Lot appear in?

Accepted Answer

Green Parking Lot appears in OP of Oomuro-ke: Dear Friends.

Question 3

Can I visit Green Parking Lot?

Accepted Answer

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

Question 4

Where was Oomuro-ke: Dear Friends filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Green Parking Lot is one of those real places (OP).