While in the Huntington Library area, make a quick detour to this transporting brick-and-adobe structure with creaky wooden floors and exposed timbers in the rafters. It houses Southern California’s first water-powered gristmill, built in 1816 for the San Gabriel Mission. The displays are pretty staid and old fashioned, but the building is worth the trip.
Limited on-site parking is available. Otherwise, park on the street outside.