Question 1

Where is Taisho Roman Tea Room?

Accepted Answer

Taisho Roman Tea Room is in Hirosaki, Aomori, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Flying Witch does Taisho Roman Tea Room appear in?

Accepted Answer

Taisho Roman Tea Room appears in OP of Flying Witch.

Question 3

Can I visit Taisho Roman Tea Room?

Accepted Answer

Yes. Taisho Roman Tea Room is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Flying Witch filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Taisho Roman Tea Room is one of those real places (OP).