bids for the former Tyrone County Hospital site in Omagh must be received by December 5, its selling agents have said.
The Omagh hospital led the emergency response to the August 1998 Real IRA bomb which claimed the lives of 29 people and unborn twins, and saw many more sustain injury.
Real estate firm Lisney said the scale of the site could lend itself to uses including a hotel, retail, office, leisure or residential - all subject to planning permission.
The site includes a large number of existing buildings, extending to 150,000 sq ft, including the main hospital block, laboratory premises, outpatient department and administration buildings.
There are also residential accommodation buildings, a tennis court and 10 car parks providing 275 spaces.
Elsewhere, a prominent 2.1-acre car park in Lisburn has been put up for sale after being identified as a regeneration development opportunity by Lisburn & Castlereagh City Council (LCCC). The car park, with 310 spaces, is "strategically positioned" with prominent frontage directly onto both the A1 Laganbank Road (a main arterial route through the city) and Linenhall Street.
LCCC said the site is an "opportunity to contribute to the re-vitalisation of the Lisburn city centre through a comprehensive mixed use development with potential to create new street frontage which may incorporate city centre living".
Laganbank Retail Park located opposite is fully let with occupiers including retailer TK Maxx, Pure Gym, and coffee shop Ground Coffee.
The council along with the Department for Communities are inviting expressions of interest by December 6.
Meanwhile, a former British Legion function hall is being offered for sale in Antrim.
The property, on the Lough Road, has "potential for a range of uses or redevelopment" subject to planning permission.
The area offered for sale includes the main function hall with a mezzanine section and usual associated areas.
Informal tenders are invited to Phillip Tweedie by December 13.