Mr. Saslove said that people like Prince Bandar, who is now the secretary general of the Saudi National Security Council and is not spending as much time in the United States as he once did, helped establish Aspen’s newer style, which is much more about family, culture and art — and wealth that even Hollywood stars cannot match.

“I don’t see as much braggadocio as I used to,” said Mr. Saslove, a gruff 66-year-old with longish hair and a nonstop Blackberry.

In his 22 years as Saudi Arabia’s ambassador to the United States, a tenure that ended in 2005, Prince Bandar was a powerful ally to a succession of presidents. Most recently, however, British media accounts have said that a major British arms contractor paid more than $2 billion clandestinely into bank accounts in Washington controlled by Prince Bandar. The prince has denied the allegations.

Image Joshua Saslove, a real estate broker, at the indoor swimming pool at Hala Ranch. The home was built for Prince Bandar bin Sultan of Saudi Arabia. Credit... Michael Brands for The New York Times

At 56,000 square feet, Hala is bigger than the White House, with a staff of 12. It has 15 bedrooms, 16 baths, a private barbershop and beauty salon just off the master suite and enough space for a party of 450 people.

Many of the rooms are huge, with banks of windows overlooking the Aspen valley and the mountains beyond. There are few proclamations of grandiosity beyond the occasional artwork, like the Albert Bierstadt painting that hangs over the main fireplace. (It does not come with the house.) Dark, gleaming wood beams, all with notched construction and not a single nailhead showing, pale plaster walls and television screens dominate the decor.

It is not a house for a family that putters in the kitchen, which is in the basement, the province of professional chefs with its stainless-steel everything and rows of hanging pots. Housekeepers were ironing the sheets in the nearby laundry, feeding them through a giant pressing machine.