The hidden history of Naples, including its earliest Greek and Roman origins, lies beneath the city's bustling streets. Historian Dr Michael Scott and history buff Alexander Armstrong delve into a labyrinth of fascinating underground spaces that helped build and sustain the city. Using cutting edge technology they reveal vast subterranean caverns and wonder what, exactly, is holding the city up!

The romantic watery wonderland of Venice was actually built on a swamp. Despite this, it became one of the most powerful places in Medieval Europe. Historian Dr Michael Scott and history fanatic Alexander Armstrong delve beneath the city's famous canals. They uncover the reason why Venice is slowing sinking and try to work out what, if anything, can be done to save it.

The wonderful facades and world renowned artworks of Florence mask a hidden story of intrigue and secrecy. Alexander Armstrong and Dr Michael Scott explore this most romantic of cities and learn about the powerful dynasty behind its establishment: the Medici. A virtual reality 3D model reveals how the city's secret corridors of power were the foundation of Florence's Renaissance glory.