Cigar Smoke at Riverside: Inside Montana’s Daly Mansion

Reviewed by Josh N · Updated August 27, 2026 · How we verify

The smell of cigar smoke in an empty room is the story people repeat most often about the Daly Mansion, the summer house that copper baron Marcus Daly built for his family outside Hamilton, Montana. The house is enormous, empty for four decades, and open to the public for only part of the year, which is exactly the combination that breeds ghost stories. What follows separates the documented history of the estate from the experiences visitors and staff have reported inside it.

Quick Facts on the Hamilton Estate

• Location: Hamilton, in Montana’s Bitterroot Valley
• Original name: Riverside, the Daly family’s summer home
• Size: roughly 25,000 square feet, 25 bedrooms, 15 bathrooms, fireplaces of Italian marble
• Grounds: 46 acres, once the core of a 22,000 acre stock farm
• Status: historic site open for tours from June through October, also used for weddings and events

From County Cavan to the Richest Hill on Earth

Marcus Daly was, in the words of the historical record, “an Irish-born American businessman known as one of the Copper Kings of Butte, Montana.” He emigrated from County Cavan as a young boy, landed in New York City, sold newspapers, and worked his way west to California and then to the silver diggings of the Comstock Lode in 1860. He learned the trade underground before he ever owned any of it.

What made him rich was noticing copper where other men saw silver. Daly founded his fortune on the Anaconda mine at Butte, and in 1899 the Anaconda Mining Company and its associated interests were sold for $39 million, becoming the Amalgamated Copper Mining Company. He was made president of the new company that same year and died the following year, in 1900. Every marble mantel in the Hamilton house was paid for by that hill.

Riverside, Tammany Castle, and 22,000 Acres

The mansion did not begin as a mansion. In 1886 Daly bought property in Hamilton, built a summer residence, and created the Bitterroot Stock Farm, a 22,000 acre ranch and horse breeding operation. Around the family’s residence he assembled something closer to a private town: a stable called Tammany Castle, named for his prize-winning thoroughbred, plus a racetrack, a veterinary clinic, apple orchards and cattle. To water the fields he invested in ditch companies that cut irrigation canals through the valley. He bought timberland, built sawmills to feed the smelters at Anaconda, and in 1890 opened the Bitterroot Development Company Store, which became the Valley Mercantile eighteen years later.

The horses were not a hobby. Daly took ownership of Tammany in 1891, and the horse was identified as Horse of the Year in 1893. He also stood Inverness, sire of Scottish Chieftain, the only horse born in Montana ever to win the Belmont Stakes. The scale of the operation is easiest to grasp from what happened after Daly died: New York’s Madison Square Garden hosted a dispersal sale of the Bitterroot thoroughbred stud beginning on January 31, 1901, and 185 horses sold on the first day for $405,525.

The House Margaret Daly Rebuilt, Then Left Behind

The building visitors tour today is dated to 1896, and its present appearance is largely the work of Daly’s widow rather than Daly himself. Margaret Daly had the home remodelled after his death into a Georgian Revival Colonial, which is why a Victorian-era copper king’s summer house reads as something more restrained and symmetrical from the drive.

She used it until her death in 1941. After that the house sat unoccupied and slid into neglect, a 25,000 square foot building with no one in it, until the State of Montana took ownership in the 1980s and the long work of stabilising it began. The family name stayed attached to the valley in other ways: the Marcus Daly Memorial Hospital in Hamilton, now Bitterroot Health-Daly Hospital, was incorporated on December 18, 1929, and the town still holds a Daly Days celebration in his honour.

Cigar Smoke, Cold Spots and the Reports from Inside

None of the following is verified, and all of it is reported experience rather than documented event. The most persistent account is the smell of cigar smoke drifting through rooms where nobody has been smoking, which staff and visitors tend to attribute to Marcus Daly himself. Other reports include apparitions, cold spots with no obvious draught, picture frames found moved out of position, and furniture that appears to have shifted.

Some accounts name Marcus Daly Jr. as one of the figures seen in the house, and describe his death as mysterious. Treat that carefully: the sequence of events and the identification of any apparition with a specific member of the family are matters of local retelling, not of record. What can be said plainly is that the mansion has attracted paranormal investigators and enthusiasts for years, and that its haunted reputation is now part of the site’s own programming, including an annual haunted hayride on the grounds.

A house of this size, empty for forty years and cold in the shoulder seasons, produces noises and drafts on its own. That does not settle the question. It does mean a visitor should walk in expecting an unusually well preserved 1890s interior first and a ghost story second.

Touring the Daly Mansion in Hamilton

The mansion operates as a historic site and is open to visitors from June through October, with self-guided tours through the house and access to the 46 acre grounds. It is also a working event venue, hosting weddings and functions, so parts of the estate may be given over to a private booking on any given day. Anyone travelling specifically for the paranormal reputation should aim for the autumn end of the season, when the haunted hayride runs and the building is at its least summery. Check current hours and event bookings before you drive out to the Bitterroot Valley.

See Daly Mansion for Yourself

Sources

• Marcus Daly
• Millionaire Daly of Montana dead
• Walkerville, Butte
• Marcus Daly Family papers, 1883-1996
• The History of the Lightbulb (Energy (official))
• Wikipedia: Marcus Daly

Address: 251 Eastside Highway

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