Question 1

Where is Karatsu Castle?

Accepted Answer

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

Question 2

Which scene of Yuri!!! on ICE does Karatsu Castle appear in?

Accepted Answer

Karatsu Castle appears in EP2 of Yuri!!! on ICE.

Question 3

Can I visit Karatsu Castle?

Accepted Answer

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

Question 4

Where was Yuri!!! on ICE filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and Karatsu Castle is one of those real places (EP2).