Gymnasium

Traditional Mongolian wrestlers practice in a Soviet-era gymnasium on Friday in Ulaanbaatar, Mongolia. On July 11-13 traditional Mongolian wrestlers will take part in the Naadam festival which is marked by competitions in the "three games of men" - wrestling, archery, and horseback riding

Taylor Weidman/Getty Images

Traditional Mongolian wrestlers practice in a Soviet-era gymnasium on Friday in Ulaanbaatar, Mongolia

German Chancellor Merkel writes her name on a blackboard at the Heinrich Schliemann Gymnasium in Berlin...German Chancellor Angela Merkel writes her name on a blackboard before conducting a lecture at the Heinrich Schliemann Gymnasium, a secondary school, in Berlin August 13, 2013. Merkel delivered a lecture to a 12th grade class on the building of the Berlin Wall in August 1961.

Reuters

German chancellor Angela Merkel, campaigning for a third term, filled in as a school history teacher on Tuesday on the 52nd anniversary of the building of the Berlin Wall.