Retirement communities are often built in warm climates, and are common in Arizona, California, Florida, and Texas, but they are increasingly being built in and around major cities throughout the United States. The oldest known and longest continuously running retirement community in the United States is Ryderwood, Washington. Ryderwood was originally established in 1923 as a Long-Bell logging camp, then was sold to Senior Estates, Inc. in 1953 to create a retirement community. Senior Estates, Inc. converted the town into a retirement community. Time Magazine covered the event in the Real Estate section with the article "Old Folks at Home". As of 2019, Ryderwood remains a retirement community. Del Webb opened Sun City, Arizona, with the active adult concept, in 1960. In 2011, The Villages, Florida became the largest of these communities.