Wine auctions are events where collectors and enthusiasts can buy and sell bottles of wine. These auctions can take place in person or online, allowing participants to bid on rare and valuable wines from various regions and vintages. The auction houses often provide detailed descriptions and provenance information to help buyers make informed decisions. Participants in wine auctions typically include private collectors, restaurants, and retailers looking to expand their selections. Successful bidders can acquire unique bottles that may not be available in stores, while sellers can reach a wider audience for their prized wine collections.