A few weeks ago I started noticing several images on my Instagram feed that appeared to be watercolors, but were actually photographs that had been altered through the smartphone app, Waterlogue. I found it to be a bit addictive as I took old photographs and ran them through the app to see the results. As with many photo apps, there are various filters to work with. The bouquet above shows the "Natural" filter and then below is the same photo using the "Fashionable" filter.
Here are a few more results—a wonderfully worn pickup truck outside Rachel Ashwell's The Prairie. I think the detail is rather impressive.
And the Bethesda fountain in the snow from my recent trip to Central Park.