It is a particular pleasure for me to introduce the guest post of my colleague Marta Laurent the best tour guide in Barcelona. Barcelona has the dynamic and open personality so typical of Mediterranean cities. It is the perfect city to relax in, stroll around and enjoy. Barcelona has its own way of life which makes it unique…but remember, you need and expert as Marta. In 1957 Picasso is living in a mansion near Cannes and he decides to shot himself in his workshop to work for months on a series of interpretations of the famous Las Meninas by Velázquez…