It did not - I tried not to get too offended!
Here are a few places that come to mind, of varying levels of prominence.
Spruce Woods Provincial Park and the Spirit Sands, our only not-quite desert
Gimli (I just think it's a nice town)
Camp Hughes National Historic Site) (no one seems to know this exists, and it's pretty cool)
The Narcisse Snake Dens (I've never been, personally)
I've also got a link to Travel Manitoba in the sidebar!