The main entrance and parking lot are located at 409 W Riordan Rd., two blocks east of Milton Rd. next to the NAU parking garage.
Programs & Events
Riordan Mansion State Historic Park
Girl Scouts Love State Parks Weekend
September 12-13, 2026
An activity table will be set up in the visitor center with information and activities for girls to earn their Riordan Mansion patch. Activities are included with park entrance fee.
Tea on the Veranda
Sunday, September 13, 2026
1-3 p.m.
Step into 1904 and have tea on the veranda, just as the Riordans did at the beginning of the last century. This event is brought to you by Riordan Action Network and Northern Arizona Celtic Heritage Society.
A Taste of Ireland at Riordan Mansion
Saturday, September 19, 2026
4 p.m.
Join the Northern Arizona Celtic Society for an unforgettable evening of traditional Irish music and culture featuring the Hugh O'Conor Memorial Pipe Band, the Hugh O'Conor Trad Group, and traditional Irish dancers.
Evening Lecture: Bats of Northern Arizona
Tuesday, September 22, 2026
5:30-7 p.m.
Riordan Mansion is proud to offer this Bat Conservation International-guided Bat Presentation and Walk. Kathleen Slocum will share the fascinating story of bats in Arizona, followed by a walk on the Riordan Mansion grounds. Registration required.
Festival of Science Lecture: The Merriam Expedition to San Francisco Mountain — Life Zones and the Founding of Ecology
Sunday, September 27, 2026
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6-7 p.m.
This special lecture for the Flagstaff Festival of Science is presented by historian Roy May. Roy will tell the story of the 1889 C. Hart Merriam expedition, its origin, and importance. Merriam developed the Life Zone concept as a means of describing areas with similar plant and animal communities, which helped shape the founding principles of ecology. Registration required.
