The main Inari shrine in Japan is the Fushimi Inari Shrine in Kyoto. It is considered to be the headquarters of all the Inari shrines in Japan and features thousands of red torii. Search for “Fushimi Inari Shrine” on Google Images and you will find dozens of photos of this impressive shrine, with so many torii lined up — one after another — that they form a kind of canopy. Here’s some information about this famous shrine:
From japan-guide.com: http://www.japan-guide.com/e/e3915.html
This is the shrine’s website, but it is all in Japanese. You might just enjoy looking at the photos if you can’t read Japanese: http://inari.jp/
Here’s an English-language resource: http://www.jnto.go.jp/eng/location/spot/shritemp/fushimiinaritaisha.html