Most of the street-name signs in Burnaby, the Vancouver suburb where I live, are the standard metal stick-out-from-the-post type, like this one:
However, a couple of decades ago, just up the block from us, the city installed this one, entirely vertical in design and mounted on a girder rather than a post. And I haven't seen another like it anywhere in Greater Vancouver:
It's not genuinely bizarre—it's still white on green, and if all the signs were like that, things would work just fine. I just wonder why it's different from all the rest. (UPDATE: In the comments, visitor RentingSucks provides the explanation, which is funny, and logical.)
Across the street from those two is this masterpiece, which I still consider the most confusing road sign ever:
Maybe there's a secret road sign experimentation division down by Burnaby City Hall that I don't know about, and our street is its main lab.