Sony has announced a very limited run of some unique Xperia Z3 devices with designs based off of major cities around the globe. The devices feature an engraved back design with illustrations inspired by Berlin, Tokyo, and Warsaw.
The Xperia Z3 landed the Berlin engraving, designed by Vesa Tapani Sammalisto, while the Xperia Z3 Compact bears a Tokyo-inspired design created by Shinpei Hasegawa. The Xperia Z3 Tablet Compact has a design based on Warsaw from Jan Feliks Kallwejt.
These are definitely some of the coolest designs you’ll see on a smartphone, but they’re only available in Germany in extremely limited quantities as of right now. Sony made about 33 of each model, so they probably won’t last long.
source: Xperia Blog