Michael Palin revisits his first groundbreaking travel series, and fans, including Sir David Attenborough and Joanna Lumley, reflect on his achievement.

Michael Palin revisits his second travel series – an ambitious trip from pole to pole. Fans including Sir David Attenborough and Joanna Lumley reflect on his achievements.

Michael Palin revisits his third travel series – an epic trip around the Pacific Rim. Fans including Sir David Attenborough and Joanna Lumley reflect on his achievement.

Michael Palin revisits his fourth travel series – a journey to explore the Sahara Desert. Fans including Sir David Attenborough and Joanna Lumley reflect on his achievement.