The Strade Nuove and the System of the Palazzi dei Rolli of Genoa are a UNESCO World Heritage Site in the center of Genoa. The Palazzi dei Rolli are a group of noble palaces which, at the time of the ancient Republic, were obliged, on the basis of a public draw from the lists (rolli) of the public lodgings, to host the high personalities who were in Genoa visiting State. They comprise a range of late Renaissance and Baroque buildings usually three or four storeys "with spectacular open staircases, courtyards and loggias overlooking gardens". Many of the interiors, despite the passing of the centuries and the heavy damage caused by the bombings of the Second World War, have the original decorations of the major authors of Genoese Mannerism and Baroque. In later times, the same houses hosted illustrious travelers who included the Ligurian capital in their cultural or tourist-economic Grand Tours.