[quote=@Turboshitter]
<Snipped quote by Zobozun>

[url=https://punynari.wordpress.com/2009/10/31/real-life-fate-stay-night-locations-in-kobe/]Even Rin's house was based on a real mansion in the city's Western district.[/url]
[/quote]

Inspiration's iffy so I don't use that as concrete. We know from GO that it's in Kumamoto Prefecture, but that's about it.