Visitors are invited to tour the historic Stone House Museum in Hidden Valley Lake, Calif. Courtesy photo.

HIDDEN VALLEY LAKE, Calif. – The Stone House Historical Society invites visitors to come and tour the historic Stone House Museum.

The building, which the society says is the county's oldest, was built in 1854 and became a California State Historical Monument in 1950.

The Stone House Museum is located at 18174 Hidden Valley Road, Hidden Valley Lake.

The museum is preserved and maintained by the Stone House Historical Society, www.lakecountystonehouse.com/.

Docent-led tours take place by reservation.

Call 707-987-7370 to set up a tour or for more information.