The word for today is…
belle epoque (noun) – An era of artistic and cultural refinement in a society, especially in France from the late 19th century until the beginning of World War I.
Source : The Free Dictionary
Etymology : In the years before World War I, France experienced a period of economic growth that produced a wealth of artistic and cultural developments. That era has been described as excessive, glittering, gaudy, and extravagant, but the tumultuous days of war that followed it inspired the French to call that productive period la belle époque—literally, “the beautiful age.” The term belle epoque soon found its way into English, where it came to be used to refer not only to the glory days of late 19th-century France, but to any similarly luxurious period. It is now used to more elegantly convey the sentiments of another nostalgic expression, “the good old days.”