Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...

Snapchats from all over the world can be easily viewed online. On Monday, Snapchat released map.snapchat.com for Snap Maps that highlights Our Stories and other public snaps overlaid on a global map.

Renders an optional equirectangular galaxy/milky-way panorama texture with configurable brightness, plus thousands of individual point stars with additive blending. Perfect for globe-projection maps ...