The National Interest Land Mass.

Definition -The National Interest Land Mass (NILM) consists of "National shrines, the river and canal banks, the Confederation Boulevard, the Gatineau Park and the Greenbelt in the National Capital Region...considered essential to the realization of the vision of the Capital. There are 37 individual parcels of property in this category currently owned by the NCC totaling some 44,200 ha. in area. Land forming part of the NILM will be retained by the NCC on behalf of the government in perpetuity, for purposes which lie at the core of the NCC's mandate, and will be managed by the NCC with little or no further management involvement by the Treasury Board Secretariat." (Google: 1988-09-15-TB-re-NCC-Land Holdings.)  Ontario 

• Victoria Island - 6.35 ha.
• Part of Lebreton Flats N. of the Transitway -65.37 ha.
• Shoreline behind Parliament Hill - 2.91 ha.
• Chambers Building, Elgin & Queen - 0.27
• Confederation Square - 0.15 ha.
• Parts of Wellington in front of Chateau Laurier and the Conference Centre and land to the east of the Conference Centre.Also lands North of Wellington between the Rideau Canal locks and the Chateau Laurier & Major's Hill Park. Also the approach to the Alexandra Bridge & the new Art Gallery site.
• Lady Grey Drive at the Ottawa River W. of Sussex Dr.
• Daly Building corner of Rideau & Sussex
• 8 parcels of land E. of Sussex (Mile of History) from Rideau Street to MacDonald Cartier Bridge.
• Small park on W. side of Sussex Dr. South of the MacDonald Cartier Bridge
• Pt of the Mint property West of Sussex Drive
• 2 parcels West of Sussex Drive North of MacDonald Cartier Bridge. Parking lot at Earnscliffe & water lot.
• 4 parcels on the Rideau River around City Hall
• 4 parcels East of Sussex Drive between Stanley Ave. and Rideau Gate
• PM's residence
• 7 Rideau Gate (Guest House)
• G.G.'s residence, Rideau Hall
• Ottawa River Parkway Wellington Street to Carling Ave.
• Champlain Bridge, Island Park Drive
• Rideau Canal lands, from downtown to Hog's Back Rd.
• Rideau River lands Green Island to Revelstoke Dr.
• Airport Parkway
• Eastern Parkway Hemlock Rd. to Hwy 417
• Eastern Driveway & Rockcliffe Park from Sussex Drive to Greenbelt
• Lower Duck Island Ottawa River
• Greenbelt, 14,000 ha (approx)

Quebec

• 3 parcels, Ottawa River shoreline at Portage Bridge & land beside Eddy Street
• Parts of Laurier St in front of Place du Portage
• Ottawa River shoreline at the Alexandra Bridge approach
• Hull wharf Ottawa River water lot only
• Museum site Laurier Ave
• Ottawa River shoreline South of Brewery Creek
• 8 parcels on the East side of Brewery Creek
• 4 parcels, Jacques Cartier Park
• Ottawa River shoreline proposed Voyageur Parkway
• Leamy Lake and part of the Philemon Wright Corridor.
• Gatineau Park, 32,000 ha (approx.)

Minister of Public Works Erik Nielsen and Prime Minister Brian Mulroney, both of whom created the policy and Prime Minister Joe Clark. The photo is by Peter Bregg.

"The Central Experimental Farm is designated in its entirety as part of the National Interest Land Mass. These lands are essential for the long-term symbolism, functions, physical structure, and natural and cultural landscapes of the Capital."

"Implicit in a NILM designation is a formal recognition of the Federal Government's interest in the long-term use of these lands. Most NILM lands are, or should be under the custody of the Federal Government to ensure they are protected and enhanced. Generally, the majority of these lands are, or will be, owned by the NCC, while some NILM land will also be under the custody of other federal custodians or departments." (From: "CEF National Historic Site Management Plan." Part 7/20.)