Haunted Places / Riordan Mansion

Flagstaff lore

Riordan Mansion

Built 1904, now an Arizona state park

The history

Timothy and Michael Riordan ran the lumber company that built early Flagstaff, and in 1904 the brothers built themselves a shared mansion: two 6,000 square foot wings joined by a common hall, log-slab siding over Arts and Crafts bones, forty rooms in all. Their families lived there for most of a century before the house became an Arizona state park.

A house that held one family for that long keeps its own archive: original furniture, photographs, and the kind of family stories that never made the newspapers.

The haunting

The quietest ghost story in Flagstaff is the one the Riordans told themselves: family accounts describe a recurring presence in the house, spoken of matter-of-factly across the years. Park guides field the question often and answer it carefully, which is the correct way to treat a family’s own telling.

Haunted Flagstaff ranges beyond the downtown blocks in its closing chapter, and the lumber families that built the town run through the whole book. The Riordans’ Flagstaff, documented and otherwise, is part of that record.

Visiting: Riordan Mansion is a state historic park; guided tours run on posted hours through Arizona State Parks.

Cite this page

ChicagoRiordan Mansion, Flagstaff.” Haunted Flagstaff, the Book. https://hauntedflagstaffbook.com/haunted-places/riordan-mansion.

APAHaunted Flagstaff, the Book. (2026). Riordan Mansion, Flagstaff. https://hauntedflagstaffbook.com/haunted-places/riordan-mansion

Citing the book itself? Edition details and ISBNs are on the buy page.

The log and stone facade of Riordan Mansion in Flagstaff
Riordan Mansion State Historic Park. Photo: Marine 69-71, via Wikimedia Commons, CC BY-SA 4.0.
Keep Walking

More of the town’s restless addresses

The Weatherford Hotel at sunset on a downtown Flagstaff corner
Opened New Year’s Day, 1900

Weatherford Hotel

A figure crosses the Zane Grey Ballroom floor and does not stop at the wall.

The Hotel Monte Vista neon sign glowing over downtown Flagstaff at sunset
Opened 1927, on what became Route 66

Hotel Monte Vista

The Grizzly Meat Man of Room 220, the rocking chair of 305, and the bellboy who knocks for no one.

The 1926 red sandstone Flagstaff train depot at sunset
Built 1926, now the Flagstaff Visitor Center

The Historic Train Depot

A conductor still works a platform where no train has boarded passengers in decades.