Google took the wraps off of PlaNet, a neural network that relies on image recognition technology to locate photos, Engadget reports.

The code looks for telltale visual cues such as building styles, languages and plant life, and matches those against a database of 126 million geotagged photos organized into 26,000 grids. It can even guess the locations of indoor photos by using other, more recognizable images from the album as a starting point.

PlaNet is as good as the data it's fed, and a photo will only reveal so much by itself -- the network could only pinpoint 10 percent of images at the city level.