They tend to hide in plain sight. Those narrow winding sidestreets that are so irresistibly charming you can’t believe you didn’t notice them sooner. Some are paved with cobblestones, others are adorned with laundry and flowers, but all provide a backstage pass to a city. Here are 17 Instagrams of picturesque alleyways from around the world. Keep using #traveldeeper for a chance to be featured.