Hector Guimard's first project was to design the interior of the "Au Grand Neptune" restaurant in Paris. This was followed by several commissions for private dwellings in Paris and environs. His most important work and masterpiece was the Paris dwelling Castel Béranger, 60 rue La Fontaine (1894-1897). His best-known works are likely to be the entrances to the Paris Métro, which was completed just in time for the 1900 World Exposition.