"When I want a breath of fresh air in the winter, I head out of my city, the Macedonian capital of Skopje, and up to the surrounding hills," writes Robert Atanasovski, a photographer based in the city.
"It used to be that I would see nothing but a blanket of pollution-choked clouds. But now that a few skyscrapers are going up, you get a sense that there is a city hidden underneath."
