East Brother Light Station - Point San Pablo, CA - Maritime Museums on Waymarking.com

One of the highlights of an overnight stay is the morning tour of the EBLS Foghorn Building. The Fog Signal Building at the East Brother Light Station houses lighthouse historical items and includes two working diaphones or foghorns. The current light keeper gives a tour and usually fires up the engine-compressor machinery to blow the foghorn. Even though you're inside the building you should protect your ears from the foghorns on the roof, because it is LOUD.

The original fresnel lens of the light station is housed in the fog horn building now. Outside the foghorn building is an old signal bell with a mechanically actuated striker.