Frances to Armando... The qualifying rule for a found or made object to be deemed architecture is often held by experts that the object be at least occupied or at best inhabited, and then only by humans. The less rigid and more flexible approach for me might be that the object need be merely utilized, and then by either nonhuman or human users.
You wrote... I take that one back, Igloos on floating Ice "would" qualify, in which case, The queen Mary would also qualify. Even the first lander on the moon would qualify.
