1. Chicago

Season 4 begins by examining the impact of water and rail on the economy of Chicago. Also: a look at the gourmet delights of the city, as well as its architectural wonders.

2. Tangier

Exploring the Moroccan city of Tangier's culture and diversity.

3. Amsterdam

The culture and economy of Amsterdam are explored during a tour of the city, which also examines life on the water.

4. Dublin

Dublin's past and future are explored.

6. Shanghai 1: International City

An overview of Shanghai, one of China's most populated cities, is also known as a leading port and major center for industry, commerce and finance.

7. Cartagena

Exploring the history of the city of Cartagena in Columbia and the changes it is going through.

8. Seoul

A look at the culture and society of Seoul.

9. Mumbai

Mumbai, the financial and commercial capital of India, is explored.

10. Shanghai 2: City of Opportunities

Shanghai's transformation over the years is highlighted.

11. Auckland

A look at what Auckland, New Zealand, has to offer.

12. Los Angeles

The varied landscape throughout Los Angeles is explored.

13. Rio de Janeiro

A guide to the metropolis of Rio de Janeiro, with its white-sand beaches, lush rain forests and green mountains.