Is it street photography or architecture?

Street photography is such a hard genre to pin down.

Is good work photos of people in spaces, and what is a good ratio of humanity to space? What if you capture a lonely street scene with only one person, vs a street filled with onlookers? What percentage is the right percentage?

Anyway here are few images from our last outing where, incidentally, very few people passed by early on a Sunday. So this is "street-ish."