The Alhambra: Discover the engineering solutions and treacherous political betrayals that gave birth to what is arguably the most perfect example of Moorish architecture in existence.
Petra: In the unforgiving deserts of Jordan, wealthy traders turned engineering on its head to create one of the most magnificent monuments of ancient times, the Khazneh.
St Paul's Cathedral+
St Paul's Cathedral: Discover how the architect Christopher Wren's vision for St Paul's was created as a centrepiece for a city that had been devastated by the Great Fire of London.
Istanbul's Hagia Sophia+
Istanbul's Hagia Sophia: Discover how the Romans built the vast golden dome of the great church of Hagia Sophia, a feat which has astounded architects for centuries.
Verbal warning to be added re flashing images