If you've ever been in Seattle, you'd know that it's one of those big cities in America where it rains a lot. So it was only natural for an artist to device a street-art technique that can only bee seen when the surface is wet. Peregrine Church creates art using an environmentally-safe, water-repellant coating.

This is how it looks.

You can check out his interview and know more about his work in this video. Check it out.

h/t Rain.Works