It’s the capital city of the United Kingdom and the largest urban area of the isle. But how much do you really know about it? In the second of the series, Griff Rhys Jones spends 24 hours getting to know London like never before – from the traffic centre that keeps the city moving to the secret church beneath Parliament, and everything in between.

The capital of France is home to just over two million people, the Eiffel Tower, over 70 museums and some of the world’s best art. Join Griff Rhys Jones as he spends a little time hanging out with the snipers appointed to protect the president and gets to work in the cloakroom of the Paris Opera House.

In this episode he visits Sydney, which began life as a penal colony but is now regarded as one of the most desirable places in the world to live. He examines how the metropolis has evolved over the last 200 years, and discovers that despite its appeal, it is still struggling with its colonial past and with being a small outpost in a vast country. Griff also saves a swimmer from a possible shark attack, helps rid the city from a plague of bats, and observes a peculiar local custom that involves jumping into an ice-filled swimming pool.

Griff Rhys Jones explores some of the most amazing cities of the world. He concludes this second series in Hong Kong, a city of contradictions where the ancient and modern collide and consumerism and spirituality live side by side. He visits an exotic fish shop that opens in the middle of the night to cater to a wealthy businessman's obsession, learns about the 3000-year-old Chinese hobby of bird fancying, and discovers how Britain's colonial influence lives on in the shape of a thriving Boy Scout movement.