The Vanderbilt family is an American family who gained prominence during the Gilded Age. Their success began with the shipping and railroad empires of Cornelius Vanderbilt, and the family expanded into various other areas of industry and philanthropy. Cornelius Vanderbilt's descendants went on to build grand mansions on Fifth Avenue in New York City; luxurious "summer cottages" in Newport, Rhode Island; the palatial Biltmore House in Asheville, North Carolina; and various other opulent homes. The family also built Berkshire cottages in the western region of Massachusetts; examples include Elm Court (Lenox and Stockbridge, Massachusetts).
The Vanderbilts were once the wealthiest family in the United States. Cornelius Vanderbilt was the richest American until his death in 1877. After that, his son William Henry Vanderbilt acquired his father's fortune, and was the richest American until his death in 1885. The Vanderbilts' prominence lasted until the mid-20th century, when the family's 10 great Fifth Avenue mansions were torn down, and most other Vanderbilt houses were sold or turned into museums in what has been referred to as the "Fall of the House of Vanderbilt".
Branches of the family are found on the United States East Coast. Contemporary descendants include American art historian John Wilmerding, journalist Anderson Cooper, actor Timothy Olyphant, musician John P. Hammond, screenwriter James Vanderbilt, and the Duke of Marlborough.