(WSJ) - As Americans buy more wine, well-heeled homeowners build elaborate storage ‘cellar’ systems and buy specialty insurance for their prized collections

As people buy more wine, they’re investing in elaborate home storage systems to protect their collections.

Americans last year bought $62.2 billion worth of wine, up 2% from 2016, according to the Wine Institute, a San Francisco-based trade association for the California wine industry. Collectors can help protect the value of their investment with proper storage techniques.