Take a look at Facebook's famous 'propaganda posters' that decorate the halls of its worldwide headquarters

Facebook's propaganda posters have long been legendary for their cool design, bold typography, and even bolder messages.

In fact, Facebook used to employ a so-called "Minister of Propaganda" to create the posters in Facebook's Analog Research Lab studio.

The posters - which say things like "Proceed and be bold" or depict graphical images of bananas - decorate the halls of Facebook's various headquarters worldwide.

The posters aren't available for sale (although a few did go up for auction last November), which make them a hot commodity among graphic designers and fans of the social network alike. And since Facebook's headquarters aren't open to the public, getting a look at the famed art isn't an easy task.

A visitor to Facebook's Tokyo headquarters sent Business Insider photos of the posters during a recent visit. While all guests at Facebook's headquarters have to sign non-disclosure agreements, the pictures below were snapped in entrance hall.

Scroll down to check out Facebook's famous artwork.