Merchant James Rundlet and his wife Jane built their home in 1807. The home was an urban showplace, filled with all the finest home furnishings and latest innovations of the day.

The Lee-Fendall House Museum & Garden was constructed 1785 and is located in Old Town Alexandria. The house and its collections present a timeline of nineteenth and early twentieth century history and family life.

The stately Eustis mansion is a historic family home designed by Milton architect William Ralph Emerson and built in 1878 for William Ellery Channing Eustis and his family.

The story of Kykuit began with philanthropist John D. Rockefeller, founder of Standard Oil and the estate he built that was home to four generations of the Rockefeller family. The 40-room Georgian-style historic home in Pocantico Hills was built in 1913.

Ruth Livingston Mills and Ogden Mills owned homes in Paris, Newport, Manhattan and California, but it is this 65-room Beaux-Arts Gilded Age mansion that five generations of Livingstons lived and entertained. The 40,000 square foot mansion was originally a smaller house, built in 1832 and greatly altered and expanded to what it is today.

The Lyndhurst mansion was designed by Alexander Jackson Davis in the Gothic Revival-style. The 67-acre estate landscape design was the work of Ferdinand Mangold. The Tarrytown estate had three resident families: the Pauldings, the Merritts and the Goulds.

The Roosevelt Presidential Library and Museum was the first library solely dedicated to a President of the United States, and is located on the grounds of the family estate, Springwood. Located a short distance from Springwood was Val-Kil. Eleanor Roosevelt considered Val-Kil to be her first real home.

Wilderstien, is a Hudson Valley house museum that was occupied by three generations of the Suckley family, in Rhinebeck, NY. Thomas Suckley was a descendant of two prominent New York families: the Beekmans and Livingstons.

I have to start off by saying I did not expect what I saw at Winterthur. I had initially thought it would be a nice gilded age house museum, where you tour and admire different rooms filled with paintings and antiques. Instead, what I experienced in the former home of Henry Francis du Pont, was an extensive collection of American decorative arts in 175 rooms with over 90,000 individual objects on an estate with 1,000 natural garden acres of rolling hills, streams, meadows and forests.

Just off bustling King Street, is Carlyle House, built by merchant John Carlyle between 1751 and 1753 in the Georgian-style. The house is architecturally unique as the only stone 18th century residence in Alexandria.

Norwalk native LeGrand Lockwood, New York financier, railroad magnate, and Treasurer of the New York Stock Exchange purchased 35 acres in Norwalk, Connecticut to build his country estate. French-trained architect Detlef Lienau was commissioned to design a technologically advanced 62-room mansion with indoor plumbing, running hot and cold water, burglar alarm system and heat and ventilation controls.

Sara Spencer Morgan, sister of J.P. Morgan and husband George Hill Morgan commissioned Rotch & Tilden to build Ventfort Hall, and it was built between 1891 and 1893. They were 7th cousins so they both carried the Morgan name. The Morgan family summered together at their Lenox home until Sarah died in 1896, and then her husband in 1911. Ventfort Hall was left to their three children, Junius Spencer, George Dennison and Caroline Lucy, who sold the house and all the contents, so there are no original furnishings in the house today.

Reynolda was built between 1912 and 1917 by Kathharine Smith Reynolds and her husband R.J. Reynolds, founder of the R.J. Reynolds Tobacco Company, on 1,067 acres.

Sefton Manor, now called Mill Neck Manor, is a Tudor-Revival mansion that sits on 86 acres on the north shore of Long Island overlooking the Sound in Mill Neck.

William K. Vanderbilt chose architect Richard Morris Hunt to design the 39th birthday present he wanted to give to his wife, Alva. It would be call Marble House and was to be built on Newport’s fashionable Bellevue Avenue. Richard Morris Hunt was the first American educated at the Ecole des Beaux-Arts in Paris.

Rosecliff was commissioned by Nevada silver heiress Theresa “Tessie” Fair Oelrichs and her husband, Hermann, and was built between 1898 and 1902. Flamboyant architect, Sanford White of McKim, Mead & White, designed the house modeled after the Grand Trianon, the garden retreat at Versailles. The mansion is clad in white terracotta adorned with flowers and musical instruments. Jules Allard and Sons of Paris were commissioned to do the interior decoration.

Belcourt was a bachelor pad built for horse enthusiast Oliver Hazard Perry Belmont, with French and Gothic influences, designed by renowned Beaux Arts architect Richard Morris Hunt. The 44,000 square foot house was built with one bedroom and one bathroom and extensive stables and carriage area incorporated into the house’s ground level design.

The Breakers is the grandest of Newport’s summer “cottages” and a symbol of the Vanderbilt family’s social and financial pre-eminence in turn-of-the-century America. The mansion was built for Cornelius Vanderbilt II and his wife Alice, on 13 acres, and is named after the waves that crash at the base of the cliffs. The Italian Renaissance-style mansion replaced a smaller home on the site that was completely destroyed by fire in 1892. Architect Richard Morris Hunt was commissioned to design the house modeled after the 16th century palaces and villas of Genoa. The lavish interiors in the 70-room mansion were the work of Jules Allard & Sons of Paris and Ogden Codman, Jr.

The Elms was the summer residence of Mr. and Mrs. Edward Julius Berwind. In 1898, the Berwin’s engaged Philadelphia architect Horace Trumbauer to design a house modeled after an 18th century French chateau. The mansion was completed in 1901, with interior furnishings designed by Jules Allard and Sons of Paris. Mrs. Berwind died in 1922, and Mr. Berwind invited his sister, Julia, to become his hostess at his Newport house. Mr. Berwind died in 1936 and Julia continued to summer at the house until her death in 1961.

Glenview is a mansion built in 1877 by successful stockbroker, John Bond Trevor. In 1876, Trevor purchased 23 acres and commissioned architect Charles W. Clinton to design his home in the New York City suburbs. Nothing was spared both inside and out, when building the house.