The key for long-term storage

For bottles with corks, be sure to store your wine horizontally. Keeping wine on its side helps keep the cork moist, which is key for long-term storage. A dried out cork can cause seepage and premature aging.

It’s not necessary to keep screw top wine bottles on their sides.

See also: Wine Storage : Fridge
Wine Storage : Proper Temperature
Wine Storage : Light protection
Wine Storage : Open Bottles