World's Greatest

Travel to the centers of wealth, power, industry and innovation. From London to Tokyo, Hong Kong to New York, these are the cities that never sleep. The influence held in these economic hubs unite the global community.

The sheer scale of the world's Mega Cities provides a bustling home to populations of over 10 million. We take audiences from the high-density living of Shanghai and Bangkok to the sprawling parameters of Delhi and Mexico City. Each of these metropolises set the backdrop for some of the most dynamic cultures on earth.

Swarming with visionaries, politicians and activists, these metropolises are defined as the official seats of government. Cities like Dublin and Amsterdam, Washington and Taipei share commonalities such as broad avenues, museums and national monuments, but beyond that they are as varied as the countries they represent.

In Port Cities, we take a look at the gateways to the world. Some of the most stunning cities on the planet are port cities, hubs such as Sydney, Rio, and Cape Town, and are also some of the most culturally diverse and vibrant. The great maritime cities of the world bridge countries and continents and unite the global community.

Many of the Ancient Cities that helped shape the modern world endure to this day. In this episode we journey to these ancestors of influence such as Luang Parabang, Vienna and Istanbul where religious and cultural centers have shaped the ways in which we view the world around us and continue to do so in modern times.

Brave the frontiers of the world's most remote cities. More than distant trading posts and isolated regional hubs, cities like Alice Springs, Jaipur and even Las Vegas serve as gateways to the wild places of the Earth.