VadymA: Why so many comments regarding creating filters? The beauty and uniqueness of these images is that their effect is achieved without applying any creative filters (except probably for Barbara Cole, which for that reason I would exclude from this category). Most likely most of them are oversaturated to a certain degree, but that's about it. The rest is just a rare moment of visual illusion created purely by sunlight, and not by some cheap, disposable, mass-produced, "fast-food" filters.
Actually, Cole's image is sx70, pretty obvious.
These are amazing. I am obsessed with any kind of photography that looks like a painting. After clicking through the artists' links, I can say Barbara Cole seems to have the largest body of work in this style, its amazing, and completely original. More great photography with this aesthetic: www.piercefineart.com