As spring awakens in the Hudson River Valley, go behind the scenes in an enchanting world where landscape painters founded America's first native art movement here and legendary families—from the Roosevelts to the Vanderbilts and Rockefellers—spared no expense to build iconic estates. Join an expert-led tour of Cedar Grove, 19th-century residence of Hudson River School founder and landscape painter Thomas Cole, with inside looks at private rooms where he created his masterpieces. Enjoy special access to painter Frederic Church's Persian-inspired Olana, its interiors adorned with artifacts from his global expeditions. Tour the 54-room Vanderbilt Mansion, a Beaux-Arts masterpiece completed in 1899. At Kykuit, the Rockefeller estate, view Nelson Rockefeller's 20th-century art collection, including Picasso tapestries. Visit Villa Lewaro, the 1918 mansion of Madam C.J. Walker, a Black woman who became America's first female self-made millionaire, and Eleanor Roosevelt's Val-Kill cottage, where she crafted her Universal Declaration of Human Rights.