In the late 1800's/early 1900's this served as a Torpedo Storehouse for Ft. Ward which was used to protect Bremerton's Naval Shipyard and Puget Sound. (Though neither were ever in danger of attack.)
The goverment turned it over to the state who made it a park.
It's a beautiful place to go. You can overnight camp or just go for a day. There's a beach for walking or just watching the various boats go by.
The Bricks can be reserved for many ocassions. I once attended a wedding there.
Calma at Manchester State Park, Manchester, WA.