Immediately across the bridge he encountered the other two. On his left, the Grand Palais, and on his right, the Petit Palais. If the great fair of 1889 had bequeathed Paris the Eiffel Tower, the next fair at the turn of the century had left these two magnificent pavilions: a facing pair of exhibition halls that started as handsome stone museums and, as they rose, turned into soaring Art Nouveau glass houses. They were like opera houses made of glass, he thought, and flanking the short avenue