The 21 most influential cities in the world

Not all major cities are created equal, with some places around the world holding more influence over global business, culture, and politics than others. But what are the world's most influential cities?

That's a question that management consultancy firm A.T. Kearney tries to answer with its annual Global Cities Report. The report looks at which global cities "are improving in their competitiveness and what factors are driving that success."

It examines dozens of variables, which are then subdivided into five categories: business activity, human capital, information exchange, cultural experience, and political engagement. Scores in these categories are then added together to create a holistic ranking.

New York and London top the list, with both cities miles ahead of their nearest rivals. The top 21 are spread around the world, although Europe dominates the list.

Check out the world's most influential cities below: