Napoleon III style
The Napoleon III style was a highly eclectic style of architecture and decorative arts, which used elements of many different historical styles,and also made innovative use of modern materials, such as iron frameworks and glass skylights. It flourished during the reign of Emperor Napoleon III in France (1852–1871) and had an important influence on architecture and decoration in the rest of Europe and the United States. Major examples of the style include the Opéra Garnier in Paris by Charles Garnier (1862–71), the Bibliothèque nationale de France. and the Church of Saint Augustine (1860–1871). The architectural style was closely connected with Haussmann's renovation of Paris carried out during the Second Empire; the new buildings, such as the opera, were intended as the focal points of the new boulevards.
Opaline glass
Opaline glass is also a decorative style of glass made in France from 1800 to the 1890s, though it reached its peak of popularity during the reign of Napoleon III in the 1850s and 1860s. The glass is opaque or slightly translucent, and can appear either white or brightly colored in shades of green, blue, pink, black, lavender and yellow. The glass has a high lead content which defined it as "demi-crystal" or semi-crystal. The primary influences on this style of glass were 16th century Venetian milk glass, and English white glass produced in 18th century Bristol.