The Tombs - There was apparently a proposal to convert The Tombs to an FDNY Fire Academy at one time:
History:
"The Tombs is the colloquial name for the Manhattan Detention Complex...a municipal jail in Lower Manhattan at 125 White Street, as well as the nickname for three previous city-run jails in the former Five Points neighborhood of lower Manhattan, an area now known as the Civic Center.
The original Tombs, officially known as the Halls of Justice, was built in 1838 in the Egyptian Revival style. It was a replacement for the colonial era Bridewell Prison, located in today's City Hall Park. The new structure incorporated material from the Bridewell (built in 1735 and demolished in 1838), mainly granite, to save money.
The four buildings known as The Tombs were:
Tombs I, 1838?1902, New York City Halls of Justice and House of Detention
Tombs II, 1902?1941, City Prison
Tombs III, 1941?1974, Manhattan House of Detention
Tombs IV, 1983/1990?present, Manhattan Detention Complex (known as the Bernard B. Kerik Complex from 2001 to 2006)"
-Wikipedia https://en.wikipedia.org/wiki/The_Tombs#City_Prison.2C_1902.E2.80.931941
http://www.correctionhistory.org/html/chronicl/nycdoc/html/histry3a.html
The Tombs - built 1902:
Drawing of possible conversion to FDNY training academy: