bild

In this Aug. 31, 2016 photo, visitors take photos in front of the Facebook logo outside of the company's headquarters in Menlo Park , Calif. There's a quirky twist in tourism emerging amid the Silicon Valley whirlwind of innovation that has tethered everyone to their smartphones. Those omnipresent devices are now being used to track down technological touchstones so selfies can be taken, videos can be recorded and the experience can be celebrated in a Facebook post, Snapchat or tweet. (AP Photo/Marcio Jose Sanchez)