FRANKFURT AM MAIN, GERMANY - OCTOBER 21: The Frankfurt city skyline pictured from the construction site of the new headquarters of the European Central Bank (ECB) on October 21, 2014 in Frankfurt, Germany. (Photo by Thomas Lohnes/Getty Images)
FRANKFURT AM MAIN, GERMANY - OCTOBER 21: The Frankfurt city skyline pictured from the construction site of the new headquarters of the European Central Bank (ECB) on October 21, 2014 in Frankfurt, Germany. (Photo by Thomas Lohnes/Getty Images)