Question 1

Where is SONIC CITY?

Accepted Answer

SONIC CITY is in Saitama, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Lucky☆Star does SONIC CITY appear in?

Accepted Answer

SONIC CITY appears in EP15 of Lucky☆Star.

Question 3

Can I visit SONIC CITY?

Accepted Answer

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

Question 4

Where was Lucky☆Star filmed?

Accepted Answer

Anime and manga are not filmed the way live action is. Their backgrounds are painted from photographs of real locations, and SONIC CITY is one of those real places (EP15).