The greatest period of growth of cryonics came about in 1793, with the tragic death of Empress Emeritus Octavia I Cyprium (reigned 1425-1644) in a laboratory accident. In accordance with her previously stated wishes, her body was preserved in liquid nitrogen and immured in a specially constructed capsule in the vaults beneath the Garden Tower of the Imperial Palace.
The publicity surrounding these events served to bring cryonics into the public eye across the Empire. Many pro-cryopreservation branches and cryoinvestment corporations formed in the following decade, and the first Vaults of the Dead Awaiting – facilities for mass cryopreservation of all the deceased – were under construction near prominent Ledges of the Dead in the early 1800s.
Octavia I was revived from cryostasis and treated for her injuries successfully in 2581. Her cryocapsule is currently on display at the Imperial Museum of Curiosities, along with its plaque, wryly reading, “In event of Empire-threatening emergency, break glass.”