9904-phsh-alarm-sensor - Abandoned Hospital (Presidio, San Francisco)
Photo © Tristan Savatier - All Rights Reserved - No authorized use without written permission
One of the (in)famous alarm sensors, this one is in the basement.
The Public Health Service Hospital (PHSH) is located in the Presidio of San Francisco. It has been rehabilitated into luxury condos housing in 2010, and it is now called "Presidio Landmark Apartments". For more information about this place you can visit my PHSH page.