Visitors to Athens can see the changing of the guard take place in front of the Parliament Building every hour. A Polish tourist named Tomasz saw the ceremony for himself in July 2011, and the video he recorded shows silence come over the crowd as the soldiers begin their moves in slow motion. The soldiers on guard stand immobile for 60 minutes at a time, so the changing of the guard is performed slowly to protect their blood circulation. Credit: YouTube/tojad