Question 1

Where is Excelsior Caffé Akihabara?

Accepted Answer

Excelsior Caffé Akihabara is in Chiyoda, Tokyo, Japan. You can see its exact position from the map coordinates and the Street View link.

Question 2

Which scene of Steins;Gate does Excelsior Caffé Akihabara appear in?

Accepted Answer

Excelsior Caffé Akihabara appears in EP15 of Steins;Gate.

Question 3

Can I visit Excelsior Caffé Akihabara?

Accepted Answer

Yes. Excelsior Caffé Akihabara is a real place you can visit. Check what it looks like on Street View before you go.

Question 4

Where was Steins;Gate filmed?

Accepted Answer

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