The California Powder Works was built on the site in 1861 as supplies of explosives from the east were cut off by the Civil War. The works produced black powder, dynamite, and smokeless powders for civilian and military uses, powered by the waters of the San Lorenzo river distributed by a system of flumes from a dam located in what is now
Henry Cowell Redwoods State Park.
Lillian Dake Heath had been a school teacher in the Powder Mill Flat (now known as Paradise Park) starting in 1883. A large explosion on 26 April 1898 killed 13 and injured 25, forcing the abandonment of the on-site employee housing and public school, and soured public opinion on the operation of an explosives works so close to the city of
Santa Cruz. The opening of the Panama Canal simplified shipment of powder to the US Navy's Pacific Fleet from factories on the east coast, and the works was abandoned in 1914. The decaying buildings were demolished and the property was put up for sale in 1924, when a group of Freemasons from
Fresno, California purchased it for use as a summer retreat. They laid out streets with names related to
Freemasonry. The area continues to be under the auspices of the Paradise Park Masonic Club, with homes owned by members. In August 2020, Paradise Park was put under an evacuation order due to the
CZU Lightning Complex fires. ==References==