AARP Hearing Center
Built in 1876, the Knox House Museum is the oldest commercial building in El Cajon and is maintained by the El Cajon Historical Society and the city of El Cajon.
El Cajon Centennial - Nov. 12, 2012
Open for Tours:
1st Saturdays: 11 am - 2 pm
2nd Saturdays: 11 am - 2pm
3rd Saturdays: 11 am - 2 pm
or by appointment - closed in August
FREE but donations appreciated.
Become a museum DOCENT (tour guide)
Friday, Dec 26, 2025 at 6:00 p.m. ET
Zoom
Online Event
Monday, Dec 29, 2025 at 11:00 a.m. ET
Zoom
Online Event
Monday, Dec 29, 2025 at 11:00 a.m. ET
Facebook and YouTube
Online Event