The Palace of Fontainebleau, located 55 kilometres from the centre of Paris, is one of the largest French royal châteaux. The palace as it is today is the work of many French monarchs, building on an early 16th century structure of Francis I. The building is arranged around a series of courtyards. The city of Fontainebleau has grown up around the remainder of the Forest of Fontainebleau, a former royal hunting park.This forest is now home to many endangered species of Europe.