In France, the Mayor of Paris has announced the erection of a 2.5 meter wall of bulletproof glass around the Eiffel Tower. <br/><br/>The new security measure is meant to protect France's most recognizable symbol in the event of a terrorist threat.<br/><br/>Several factors went into the decision, the most obvious being security. An estimated 6-million people visit the Eiffel Tower every year, and it is globally recognized as a symbol of France, and Paris.