The actress recalls her journey around mainland Greece. She begins in Athens with a trip to the Parthenon, a temple to the goddess Athena built nearly 2,500 years ago. Joanna also visits a festival where fortunes are read out to large crowds, although the revelations are often quite shocking and rude, watches the singer Nana Mouskouri perform at the ancient Epidaurus theatre and ends her trip with a visit to the mountain monasteries of Meteora.

The actress recalls her mammoth journey across Russia - a country she visited as a young model - as part of her 6,000-mile trip along the Trans-Siberian Railway. Highlights include a tense border crossing and drinking gold-flaked vodka with an oligarch.

The actress recalls her journey across the Greek islands. She starts out on the island of Evia, where she engages in an ancient language of whistling with the local people, and on Kos she visits the birthplace of Hippocrates, the father of modern medicine. Travelling to Nysros she carefully climbs a slumbering volcano, before setting sail for Crete, where she spends time in the mountains with shepherds and learns how their ancestors played a key role in the fight against Nazi occupation.

The actress recalls her journey through China and Mongolia on board the Trans-Siberian Express, and her various stop-offs along the way. Highlights include walking the Great Wall of China at dawn, cruising through the streets of Beijing in a Rolls-Royce and a visit to a strange restaurant boasting a Chairman Mao cabaret. She also recalls milking horses with Mongolian nomads, and hearing the music of the Mongolian throat singers.

The actress recalls the second half of her journey along the Nile. She learns how the waters at the source of the river in Uganda are believed to have powers of healing - and gets accidentally baptised. Joanna also goes on safari, where she encounters shoebills, hippos, rhinos and crocodiles, attends an early morning service at one of the many monasteries and samples the national dish. Last in the series.