David Attenborough sets out on a journey across the seven continents in search of the most impressive and inspiring natural wonders of our planet. David Attenborough sets out on a journey across the seven continents in search of the most impressive and inspiring natural wonders of our planet. David Attenborough sets out on a journey across the seven continents in search of the most impressive and inspiring natural wonders of our planet. David Attenborough sets out on a journey across the seven continents in search of the most impressive and inspiring natural wonders of our planet.