In Lisbon, one of Europe's most popular tourist destinations, Janina and Alastair discover the cultural richness of a city with a fascinating and complex history of past glory and slave trade. Janina visits the National Tile Museum and Alastair finds out how the tiled walls of the city have become the most innovative form of street art in the world. In one of the city's fado clubs, they finally enjoy the typical Portuguese music sung by seafarers who dreamed of returning home.