Master carpenter Dionigi di Matteo Nigetti (active Florence 1565-79) constructed the finely crafted and carved walnut cabinets and ceiling panels that can still all be found in the room today. Each of the doors was to be decorated with an up-to-date map of a particular region. Vasari called the map murals, Tables of Ptolemy, recognising Claudius Ptolemaeus (AD b.127-d.145) significant contributions to the history and progress of cartography. The responsibility of painting the Tables of Ptolemy was entrusted to renowned cosmographer Egnazio Danti, who was later responsible for the maps in the Vatican Galleria, Hall of Maps. Each map mural, of which there were to be 57 in total, was painted directly onto the cabinet doors, 53 of these Murals remain today. The regions depicted in the map would correspond to a collection of objects and artifacts within that cabinet. The map murals were arranged across the cabinet doors in two horizontal rows representing the hemispheres and navigated most of the perimeter of the room, only interrupted at the doorway and window. A layout of maps in this fashion came to be known as a ‘map cycle’, a term Cosimo I's guardaroba likely initiated. The may cycle is divided into sections of the then known four continents, Europe, Asia, Africa and the Americas. The "guardaroba" was one of the more unusual projects commissioned by Cosimo I and therefore, Vasari wrote concisely on its programme and its progress.