The largest city on the Mediterranean Sea sits on giant flood-battling rainfall tanks, patrolled by drones to see what's going on in the sewers.
The mammoth trade show, devoted to smartphones and mobile networking, officially starts March 2, but preparations are already well under way.
Samsung sent out invites for its next "Unpacked" event, which will help kick off Mobile World Congress in Barcelona and will most likely result in the Galaxy S7.
HTC's big phone of the year could boast a 2,560x1,440-pixel display and a fingerprint scanner on the front, but it's expected to arrive later than 2016's other major phones.
The successor to Project Beyond to be announced alongside the Galaxy S7.
The followup to the impressive Mi 4 will make its debut next month at the world's biggest smartphone show in Barcelona.
From bare bones to econo-boxes to vehicles that offer terrific value for money, affordable cars are a huge segment.
The massive trade show devoted to mobile phones and networks doesn't officially start until Monday, but preparations are under way as the tech world descends on this Catalonian city.
It's a hat. It's a heart rate hat. Why? Well, see for yourself. Heads-on in Barcelona.
MWC 2015 churned out a slew of new devices and cutting-edge tech. Join the CNET TV team as they show you the best from Barcelona.