In early twentieth century France, several artists who would later become world-famous, such as Guillaume Apollinaire, Amedeo Modigliani and Pablo Picasso squatted at the Bateau-Lavoir, in Montmartre, Paris. Paris moved to legitimize some popular artist squats in the mid-2000s by purchasing and renovating the buildings for artist–residents. An example is Les Frigos. In the 2010s there have been several land squats protesting against large infrastructure projects. These are known collectively as Zone to Defend or ZAD (French: zone à défendre). The first and largest was the ZAD de Notre-Dame-des-Landes, which successfully opposed an airport project near Nantes.