Kentucky State Penitentiary

The Kentucky State Penitentiary , also known as the "Castle on the Cumberland," is a maximum security and supermax prison with capacity for 856 prisoners located in Eddyville, Kentucky on Lake Barkley on the Cumberland River, about 4.8 kilometres from downtown Eddyville. It is managed by the Kentucky Department of Corrections. Completed in 1886, it is Kentucky's oldest prison facility and the only commonwealth-owned facility with supermax units. The penitentiary houses Kentucky's male death row inmates and the commonwealth's execution facility. As of 2015 it had approximately 350 staff members and an annual operating budget of $20 million. In most cases, inmates are not sent directly to the penitentiary after sentencing, but are sent there because of violent or disruptive behavior committed in other less secure correctional facilities in the commonwealth.
This was Kentucky's second penitentiary. The first Kentucky State Penitentiary in Frankfort was made uninhabitable from the 1937 flood.

An Act passed both houses of the Kentucky Legislature 28 April 1884 providing for a branch penitentiary to be located in Eddyville, Kentucky. Former Confederate States brigadier general and Eddyville native Hylan Benton Lyon was the moving force behind the Kentucky State Branch Penitentiary being located in what is now Old Eddyville. A hill overlooking the Cumberland River was chosen as the site for the new prison. Construction of the Kentucky State Branch Penitentiary began in 1884, using massive granite blocks quarried from a site down the Cumberland. Italian stonemasons were recruited to erect the original buildings, which resemble medieval castles.

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