Go to the Wikia's for the Elder Scrolls.
Yeah, that's where I go when I need to check a map. Plus, it will show you the area of the target and not the whole map and usually doesn't have every location discovered so it won't spoil as much as a map with every location on it.
And, as geckoman mentioned some are indoors - I think the Abandoned House in Markarth is an indoor one. I mean: I know it's indoors, but I think it's considered a Shrine.
