A Wine cellar is a storage room for wine in bottles or barrels, or more rarely in carboys (a glass jug used in fermenting wine), amphoras(a ceramic vase used to store and transport wine & perishables) or plastic containers. Wine cellars are usually located completely underground, and often have direct contact to the surrounding soil via a gap in the foundations. Wine cellars offer the opportunity to protect alcoholic beverages from potentially harmful external influences, providing darkness and a constant temperature. They are often used as stylish surroundings for wine tasting.
Wine cellars have been used for ages now, and the test of time has not depleted the use of wine cellars, if anything, wine cellars have become more popular with time. Many of those in the "upper class" keep wine cellars, or have access to wine cellars. Wine cellars have become a way to show class and style, almost similar to a well decorated room. Wine cellars very popular in many european countries, but that's not to say that they've not made their way to north america.