Art Nouveau lasted only twenty years, between 1893 and the Great War.
During this short life, it constantly evolved, which made it the most creative but also the most ephemeral of architectural styles.
Divided into two periods: It was first "Floral" made of elegant curves and convolutions, favoring realistic flowers and plants representations, organic and exuberant shapes, flamboyant stained glass as well as shimmering and iridescent colors.
Check out the remarkable examples below.
Compare it with those of the "Geometric Art Nouveau" period that followed.