I took this picture last summer while I was back home in Istanbul. Summer in Istanbul is very, very hot. Sometimes the mercury in the city gets up to 113F. It’s pretty unbearable.

On toasty afternoon, I took this picture of a bunch of people capitalizing on the shade in a park to avoid the sun. At that time of day and year, the shadows defined the usable space within the park.

From a design researcher’s perspective, this picture says so much about how the sun and shade affect how we interact with cities and spaces. Sometimes design is all about constraints.

It’s a great reminder of all the factors to consider when we design for urban environments. Or a great reminder that nature is a designer, too.