Photos show the lavish interiors of The Elms, a Rhode Island mansion built for a coal millionaire in the Gilded Age

Edward Berwind founded the Berwind-White Coal Mining Company that powered the New York City subways, Vanderbilt railroads, and US Navy ships.

He and Sarah Berwind did not have any children. When she died in 1922, she left her husband her jewelry collection worth $376,944, which would be valued at around $6.9 million today. In her will, she wrote that she didn't leave her husband any money because "he does not need it," The New York Times reported in 1922.

After his wife's death, Edward Berwind enlisted his sister, Julia Berwind, to act as the hostess at his homes in Newport and New York City. He died in 1936, and Julia Berwind spent summers at The Elms until her death in 1961.

The following year, the Preservation Society of Newport County purchased The Elms and continues to maintain the property as a museum. One adult ticket costs $25 and can be purchased through the Preservation Society's official website.

Marquis de Voyer d'Argenson, a French army officer, commissioned Château d'Asnières in 1752. The Elms is shaped similarly with two levels of windows and a rounded facade.

After Julia Berwind's death, all of the artwork and furniture at The Elms was auctioned off in preparation for its demolition. The Preservation Society of Newport County saved the mansion from being turned into a parking lot and bought back many of its original furnishings.

A portrait of Edward Berwind was mounted behind his desk.

Julia Berwind often played Mahjong or bridge in the Conservatory.

Carved by Guillaume Coustou, the statues date back to 1750 and depict Apollo, the god of the sun, and Aphrodite, the goddess of beauty, with Eros, the god of love.

In Gilded Age mansions, the Drawing Room gets its name from the practice of guests withdrawing there after dinner.

At The Elms, the Drawing Room was usually occupied by Sarah Berwind and her female guests, while Edward Berwind and his male guests retreated to the Library.

Louis XV-style furniture is recognizable by its curved legs, while Louis XVI furniture features straight, column-like legs.

The custom set was sold in 1962 when The Elms was scheduled for demolition, but it was recovered in 2016.

Depicting dawn as a woman wearing pink and Flora, the Roman goddess of spring, as a woman in a red dress holding flowers, the painting is one of the few art pieces that wasn't sold off in 1962 because it was glued to the ceiling.

Famous guests in attendance included President Theodore Roosevelt's daughter Alice Roosevelt and actress Ethel Barrymore, who was known as the "first lady of American theatre."

Enfilade, or "all in a row," was a French architectural style where rooms led into one another in a one-way procession that usually ended with an audience with the king.

At The Elms, Trumbauer mimicked this layout with rows of doorways that lined up, allowing guests to see from one end of the house to the other. However, he also added more doors that led out into the entrance hall and gardens for optimal entertaining, according to the audio tour.

Footmen in the Dining Room wore 18th-century-style uniforms and, for special occasions, white powdered wigs.

"The Venetian painting cycle at The Elms is a truly remarkable thing, that if an art museum owned it, they would dedicate an entire gallery to it," Laurie Ossman, the director of museum affairs at the Preservation Society, said in the audio tour.

In the audio tour, the Preservation Society's chief conservator, Patricia Miller, described Gilded Age homes like The Elms as "mini trips around the world" with pieces of art collected from various countries.

A dumbwaiter transported food up from the basement kitchen.

The Elms staff would polish all of the home's marble surfaces before the Berwinds arrived for the summer season.

When she wasn't at The Elms for the summer, she lived at the Savoy Hotel in New York City. Located on Fifth Avenue and 59th Street, the hotel was torn down in 1965.

Sarah Herminie Berwind used the room as both her bedroom and her office where she managed household affairs.

A placard posted in the room said that wall coverings from the 1980s had been removed and would be replaced with recreations of the original textile in the spring of 2025.

Sarah Herminie Berwind's bathroom included a large soaking tub, a sitz bath, and a toilet seat with a wicker cover.

In Edward Julius Berwind's bathroom, light fixtures shaped like iris petals lit up the mirror.

His valet was in charge of drawing baths and managing his wardrobe.

In the Sitting Room, a footman was tasked with adjusting the shades as the sun moved throughout the day.

Skylights helped supplement the dim glow of electric lights in 1901.

The same dumbwaiter that brought plates of food up from the basement also reached the second level of the Butler's Pantry, where the fine china was stored.

The Elms was run by a staff of around 40 servants who lived on the third floor.

The stove was powered by Berwind coal, as were the home's three furnaces.

Stainless steel wasn't invented until 1912, so the long table in the middle of the room was covered in zinc.

The grounds feature almost 40 species of trees and a sunken garden designed by French landscape architect Jacques Gréber, according to the Preservation Society of Newport County.

In the audio tour, Ossman said that The Elms is "many people's favorite house" to visit in Newport.

"I think that The Elms has a balance of grandeur and restraint that makes it very accessible to people," she said.