Fast Company – “In the 20 years he’d lived in New York, Raimondas Kiveris had seen the city change immensely. “It was a completely different place, a different town,” says Kiveris, a software engineer at Google Research. This got him wondering what his neighborhood looked like even before that—before he’d lived there, before he’d even been born. “There’s really no easy way to find that information in any organized way,” he says. “So I was starting to think, can we somehow enable this kind of virtual time travel?” Three years later, his attempt at virtual time travel is taking shape as an open-source map that can show, in both a bird’s-eye view and a pedestrian-level view, the changes that happen to city streetscapes over time. With a slider to control the year, the map displays a historically accurate representation of development in almost any U.S. city dating back to 1800. Automatically generated 3D models of buildings rise from the landscape as the slider moves forward through time. It can even show a rough estimation of what a city would have looked like from the pedestrian’s view, like a low-res Google Street View…”