Riordan Mansion State Historic Park in Flagstaff, AZ
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Riordan Mansion State Historic Park

Riordan Mansion State Historic Park in Flagstaff, AZ, preserves the unusual duplex home of Timothy and Michael Riordan, two brothers who made their fortune in lumber. It sits on West Riordan Road next to Northern Arizona University, about 0.7 miles off the old road. A state park since 1978 and listed on the National Register, it offers a look at how Flagstaff's timber wealth lived at home.

What is Riordan Mansion State Historic Park?

The mansion is a single large building split into two homes, one for each Riordan brother. That shared design is what makes it stand out among historic houses: two households living side by side under one roof, each with its own half of the building.

The property is preserved as a state historic park on land bordering the Northern Arizona University campus. As a state park rather than a private home, it is set up for visitors to learn about the family and the house.

History of Riordan Mansion State Historic Park

Timothy and Michael Riordan were lumber barons, and their shared mansion is a lasting sign of the wealth the timber business brought them. The house survived to become a protected site, and in 1978 it opened as a state historic park. It is also listed on the National Register, which recognizes it as a historic home worth preserving for future generations.

Visiting Riordan Mansion State Historic Park: tips

The park is at 409 West Riordan Road, about 0.7 miles from Route 66. It is listed as wheelchair accessible. Check the state park's website for visiting and tour information before you go, and allow about an hour for the house and grounds. A coffee shop and bakery is about a tenth of a mile away.

The Brannen-Devine House is about 0.7 miles off, and the Weatherford Hotel and the Railroad Addition Historic District are both about 0.9 miles away, so it pairs well with a downtown walk.

Practical info

Address
409 W Riordan Rd, Flagstaff, AZ 86001
Hours
Daily 9:30–5
On site & nearby

Sources: OpenStreetMap contributors (ODbL) · Wikidata · official site — may be outdated. Suggest a fix

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Stops near Riordan Mansion State Historic Park

All of Arizona
Brannen-Devine House in Flagstaff, AZ

Brannen-Devine House

Flagstaff, Arizona · 0.1 mi from Route 66

An 1892 brick Queen Anne cottage built for a Flagstaff pioneer, a few blocks from Route 66.

Historic buildingPhoto credit

0.7 mi from Riordan Mansion State Historic Park

Weatherford Hotel in Flagstaff, AZ

Weatherford Hotel

Flagstaff, Arizona · 0.1 mi from Route 66

A downtown Flagstaff hotel opened by John W. Weatherford in 1897, one block from Route 66.

Historic hotelPhoto credit

0.9 mi from Riordan Mansion State Historic Park

Railroad Addition Historic District in Flagstaff, AZ

Railroad Addition Historic District

Flagstaff, Arizona · 0.1 mi from Route 66

Downtown Flagstaff blocks of brick and stone where the Santa Fe railway and Route 66 meet.

Historic districtPhoto credit

0.9 mi from Riordan Mansion State Historic Park

Hotel Monte Vista in Flagstaff, AZ

Hotel Monte Vista

Flagstaff, Arizona · 0.1 mi from Route 66

A historic downtown Flagstaff hotel a short walk from Route 66, set among the old railroad-era blocks.

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0.9 mi from Riordan Mansion State Historic Park

The Ice House in Flagstaff, AZ

The Ice House

Flagstaff, Arizona · 0.1 mi from Route 66

A stone commercial building from 1946, once Babbitt's Ice Plant, a block from downtown Flagstaff.

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1.0 mi from Riordan Mansion State Historic Park

Presbyterian Church Parsonage in Flagstaff, AZ

Presbyterian Church Parsonage

Flagstaff, Arizona · 0.2 mi from Route 66

A Queen Anne style parsonage on a quiet downtown Flagstaff street, a few blocks from Route 66.

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1.0 mi from Riordan Mansion State Historic Park

Questions about Riordan Mansion State Historic Park

Who lived at Riordan Mansion?

Timothy and Michael Riordan, brothers and lumber barons, who shared the duplex mansion.

Where is Riordan Mansion State Historic Park?

In Flagstaff, Arizona, at 409 West Riordan Road, next to Northern Arizona University.

Own or run Riordan Mansion State Historic Park? Send us a photo or a correction.