Question 1

Where is Osaka Castle?

Accepted Answer

Osaka Castle is in Osaka, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of YAIBA: Samurai Legend does Osaka Castle appear in?

Accepted Answer

Osaka Castle appears in EP16 of YAIBA: Samurai Legend.

Question 3

Can I visit Osaka Castle?

Accepted Answer

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

Question 4

Where was YAIBA: Samurai Legend filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Osaka Castle is one of those real places (EP16).