Urban hacktivists set up a DIY swing at a bus station in Moscow. Photo by Shriya Malhotra.

A pedestrian about to leave his mark on an environmental awareness campaign in Shanghai. Photo via This Is Colossal.

A simple crosswalk in Shanghai was turned into a piece of eco-conscious artwork, raising awareness about the environmental benefits of walking.

That looks snug! Photo by cheer Lee.

Make sure Clyde, one of the four enemies from Pac Man, doesn't get you before you board that train. Photo by Billy R.

The community-driven art project is meant to confront the negative imagery of informal settlements in Rio de Janeiro. Photo by Leonel Ponce.

Iepe Rubingh, a Dutch artist, transformed a busy intersection in Berlin into a public art piece. “Painting Reality” is composed of bikers spilling liters of environmentally friendly and water-based paint in the path of moving traffic. Once spilled into the road, the various shades of color are spread into the street by the moving wheels of cars.

The cartoon by Push, the Taiwanese comic artist, illustrates the chaos of Taipei's traffic. Image via Morgenstadt, Goethe Institute.

Solar panels cover a train tunnel in Antwerp, Belgium, providing enough energy to power 4,000 trains for one year. Photo by Adams K.

The H Street Pop-Up Lab was a hub for activities during last year's Digital Capital Week, a technology festival in Washington, D.C. Photo by kmf164.