For 10 points - identify this French Art Nouveau architect who is best known for designing the entrances to the Paris Metro.
His first commission was the design of the interior of the Grand Neptune restaurant followed soon by the design for the Pavilion of Electricity for the Universal Exposition. He would later visit Victor Horta's Hotel Tassel and draw his inspiration from it, as well as the ideas espoused by Viollet-Le-Duc.. Following this visit, he began work on Castel Beranger, which features an asymmetric wrought iron gate. His most famous work is characterized by slender, florally inspired ironwork and delicate panes of glass.  For 10 points - identify this French Art Nouveau architect who is best known for designing the entrances to the Paris Metro.
His first commission was the design of the interior of the Grand Neptune restaurant followed soon by the design for the Pavilion of Electricity for the Universal Exposition.
Hector Guimard