Las invisible cities

Las invisible cities are presented as a series of travel stories that Marco Polo makes to Kublai Khan, emperor of the t Tartars... este emperor was saddened by lico who has understood that his unlimited power counts for little in a world that is marching towards ruin, an imaginary traveler speaks to him of impossible cities, for example a microscopic city that is widening and ends up formed by many expanding concentric cities, a spider web city suspended over an abyss, or a two-dimensional city like Moriana...