Exploring spectacular sacred sites around the world, including testaments to faith Egypt, Kathmandu, Istanbul, Barcelona, India, Meteora, Bhutan and Melk. Last in the series.

A look at the planet's most spectacular monuments and landmarks, taking in ones in Beijing, Paris, Wiltshire, New York, Rome, Rio De Janeiro, Himeji and Washington DC.

A look at spectacular and pioneering bridges in New York, Sydney, London, Prague, Mandalay and San Francisco.

A look at groundbreaking buildings in New York, Dubai, Udaipur, Transylvania, Beijing, St Petersburg and Sydney that have become statements of status, power, character and grandeur.

A look at cities and towns that combine the ancient and the modern, including Kotor, Macau, Cappadocia, Hoi An, Granada, Regensburg, Luang Prabang and Krumlov.

Examining once-powerful and populous cities that are now classed as ruins.