The Village of Portsmouth should be designated a Cultural UNESCO World Heritage Site

The Kingston Penitentiary and Prison for Women are located in Portsmouth Village, Kingston, Ontario in Canada.
The owners of the penitentiary are planning to demolish the perimeter walls, guard towers and several historic buildings in the complex. See the following documents on the Internet:

Kingston Penitentiary and Portsmouth Olympic Harbour-City of Kingston
City endorses heritage and housing vision for Kingston Penitentiary and Portsmouth Olympic Harbour

KP is on the right.

Dynamite or nitroglycerin would be necessary to destroy the walls and buildings at the Pen.
If the Village of Portsmouth becomes a World Heritage Site, plans to decimate the Pen will not proceed. And any type of residential or commercial development on the grounds of P4W would be banned.
Canada joined the UNESCO  Convention Concerning the Protection of World Cultural and Natural Heritage in 1972.
 (Criteria that pertains to the Village of Portsmouth below--ASC, creator of this blog)
1. Definition of Cultural and Natural Heritage
Article 1 
For the purpose of this convention, the following shall be considered as "cultural heritage";
        groups of buildings: groups of separate or connected buildings which, because of their architecture; their homogeneity or their place in the landscape, are of outstanding value from the point of view of history, art or science.
(See: Convention Concerning the Protection of the World Cultural and National Heritage.)

The word homogeneity means:
                                    "the quality or state of being of a similar kind or of having a uniform structure or composition throughout".
Kingston Pen and the Prison for Women were  constructed with limestone. And they were federal penitentiaries for many years.
To be selected as a World Heritage Site, buildings within that site must have  already been classified...
The Kingston Penitentiary was a Classified Federal Heritage Building of Canada, and the Prison for Women was a Recognized Federal Building of Canada. KP is now a National Historic Site of Canada.

The Australian Convict Sites - are protected because they are UNESCO World Heritage Sites. The Fremantle Prison Tunnels were dug into limestone. A tunnel connected The Big House and Prison for Women.

A book that documents the history of Portsmouth: City of Kingston, Buildings of Architectural and Historical Significance (1975) Volume 3, "History of Portsmouth Village".
________________________________________________________________

Cultural UNESCO World Heritage Sites in Canada
Head-Smashed-In Buffalo Jump in South-Western Alberta
Historic District of Old Quebec in Quebec City
Landscape of Grand-Pre in Nova Scotia
L'Ase aux Meadows National Historic Site - Newfoundland and Labrador
Old Town of Lunenburg in Nova Scotia
Red Bay Basque Whaling Station in Newfoundland and Labrador
Rideau Canal in Ontario
SGang Gwaay Llanagaay on the Northern Coast of British Columbia

Individuals and groups can contact the World Heritage Centre about endangered historical sites:
World Heritage Centre
UNESCO
7, place de Fontenoy
75352 Paris 07 SP
France
Tel: 33 (01) 45 68 18 71
E-mail: wh-info @ unesco.org
_________________________________________________________
During the summer of 1967 I attended a summer school in Kingston, the school bus drove by the penitentiary five days a week. P4W and The Big House are part of the city's DNA.
Alcatraz Island on San Francisco Bay is an American National Historic Landmark and on the National Register of Historic Places.
A Steve McQueen movie Papillon was filmed at Devil's Island, French Guiana. Devil's Island is a popular tourist attraction, just as the Kingston Pen is a popular tourist venue.