Robert Lincoln, the only child of Abraham and Mary Todd Lincoln, retained the architecture firm of Shepley, Rutan and Coolidge to built his summer home on 392 acres in Manchester, Vermont. Lincoln had served as Secretary of War and Minister to the Court of St. James, and made his fortune as a lawyer before becoming President of the Pullman Company. Robert Lincoln and his wife, Mary Harlan Lincoln, lived at Hildene in high style.

Mount Vernon is an American landmark and once a vibrant 18th century plantation and home to the first President of the United States. The estate is located on the banks on the Potomac River.

Naumkeag is the former Berkshire estate of New York City lawyer and U.S. Ambassador to Great Britain, Joseph Hodges Choate, and his wife Caroline, located in Stockbridge, Massachusettes. The Choate’s, who were part of the newly-rich, traveled in well-to-do social circles. They decided to build a 44-room shingle-style “cottage” with brick and stone details, designed by the architect of the day, Stanford White.

Loewe decided to retire to Palm Springs, California, where, in 1960, he purchased a mid-century luxury estate.

iMajor and Mrs. James H. Dooley transformed rough fields and pastures into a showplace many American millionaires were creating during the Gilded Age.

Stepping into Linden Place feels less like entering a single home and more like walking through generations of American life.

Built between 1908 and 1912, Fonthill Castle was the home of archaeologist, anthropologist, ceramicist, scholar and antiquarian Henry Chapman Mercer.

Nemours, the former 300-acre estate of Alfred I. du Pont, is named after the du Pont ancestral home in north central France. The 102-room French chateau-style mansion, designed by Carrere and Hastings, and built between 1909 and 1910, was a gift from Alfred to his second wife, Alicia.

Westbook Farms started when William Bayard Cutting purchased the George C. Lorillard estate on the Connetiquot River in the Long Island town of Great River. Cutting was a New York City lawyer and sugar beet refiner, who made his fortune in railroads and in the development of the Red Hook, Brooklyn waterfront.

Beauport, also known as the Sleeper-McCann House, was the shingle-style summer home of one of America’s first professional interior designers, Henry Davis Sleeper.

The 50-acre Sonnenberg Gardens and Mansion State Historic Park is located in Canandaigua, New York. The historic park contains the former summer mansion, a collection of period garden architecture, nine formal and informal gardens, statuary, and a greenhouse complex. The property is a gift to New York State from philanthropists Frederick Ferris and Mary Clark Thompson.

Located in the heart of the Old Town, Maison Tavel is the oldest private residence still standing in Geneva — a rare surviving example of medieval civil architecture in Switzerland.

The Riga Art Nouveau Center was once the home of renowned architect Konstantins Peksens and was built in 1903.

Alexander Hamilton’s summer home, Hamilton Grange, is located in the Hamilton Heights and Sugar Hill sections of Harlem. It has occupied three different sites within the neighborhood, all within the original bounds of Hamilton’s estate.

Clayton remained the family’s primary residence until they moved to New York in 1905. When they left Pittsburgh, the Fricks left behind much of their life there, including 93% of Clayton’s original contents—an impressive array of fine and decorative art objects.

Kentuck Knob, located in the scenic Laurel Highlands of western Pennsylvania, is a striking example of Frank Lloyd Wright’s Usonian architecture. Designed in 1954 for Isaac and Bernardine Hagan, founders of the Hagan Ice Cream Company.

Phipps Conservatory and Botanical Gardens, located in Schenley Park in Pittsburgh, Pennsylvania, was founded in 1893 as a gift from American entrepreneur Henry Phipps Jr.

A traditional caravanserai, or fondouk, was essentially a roadside inn that provided shelter, food, and water for travelers.

American architect Frank Lloyd Wright designed Fallingwater in 1935 as a vacation home for the Edgar J. Kaufmann family, owners of Pittsburgh’s largest department store.

The 40-room, 80,000-square-foot mansion was completed in 1912 after six years of construction on 135 acres close to Lloyd Harbor.