Sites from Spanish and Portuguese-speaking Countries. Almost all of them also have English and other languages as options of visualization.
Viñales valley: https://www.visitarcuba.org/vinales-cuba
Tourism official (as everything in Cuba) page. No significant webpage from the local government.
Camino Real de Tierra Adentro: The only things I found are kind of sketchy. The only official things about the whole stretch are:https://sic.cultura.gob.mx/ficha.php?table=patrimonio_humanidad&table_id=36&disciplina=
It is general, and still, it is marked as related to Guanajuato state.https://www.elcaminoreal.inah.gob.mx/
It is a general video, but it is from the INAH (Instituto Nacional de Antropología e Historia)http://inahchihuahua.gob.mx/sections.pl?id=86
This one is official, but concentrating on the stretch of the Camino that passes through the state of Chihuahua. The main pdf document refers to both WHS and not WHS-Camino related sites in the state, some of which could be eventually added to the list (especially if the site is extended to New Mexico)
I think that, in this case, the best approach would be to find/list some official websites from component sites.
Tourism official (as everything in Cuba) page.https://www.municipio-cuba.com/municipio-camaguey.html
The local government, sketchy.
Portobelo-San Lorenzo: https://es.tourismpanama.com/lugares-para-visitar/colon/portobelo/
San Lorenzo component
Both pages are from the official tourism board of Panama.
Ruins of León Viejo: https://www.visitanicaragua.com/las-ruinas-la-primera-ciudad-nicaragua/
Official tourism board.
Found this one https://www.visitleon.info/ruinas-leon-viejo.html
from the municipality of León.
Paraty and Ilha Grande: https://visitbrasil.com/pt/2022/02/18/destino-paraty-rj-2/
Official tourism board.https://www.paraty.rj.gov.br/a-cidade/sobre
Local government (prefeitura)
Sewell Mining Town: https://www.chile.travel/donde-ir/destino/rancagua-y-sewell/
Official tourism board (also mentions Non WHS Rancagua)https://www.fundacionsewell.org/visitasewell
The foundation that manages the site
Church of Atlántida: https://turismo.gub.uy/index.php/lugares-para-ir/region-metropolitana/playas/atlantida
From the official tourism board, much more focused on Atlántida as a beach town.https://www.gub.uy/ministerio-educacion-cultura/comunicacion/noticias/iglesia-cristo-obrero-nuestra-senora-lourdes
This page is also official, and directly focusing on the church. https://www.eladiodieste.org/fundaci%C3%B3n
The webpage from the Eladio Dieste foundation. However, within the part of consultation of his works, only appears the "Iglesia San Pedro in Durazno". Most probably the website is still under construction. https://www.sau.org.uy/fundacion-eladio-dieste-informacion/
This is from the Architectural Board of Uruguay, and the Eladio Dieste Foundation. It has opening times
Island of Mozambique:
Pretty surprisingly, the official national government webpage is pretty much lacking on specific information https://www.portaldogoverno.gov.mz/por/Cidadao/Informacao/Turismo
. This one is much more complete, but lacking on specific information on Moçambique island: https://www.turismomocambique.co.mz/
, in the attractions tab it includes "Mozambique" among the options, but the information there is general country information.
However, this local government page is way more complete https://www.ilhademocambique.co.mz/content/turismo
I think it's the best webpage.
Noel Kempff Mercado National Park: ¡Pretty complete official webpage! http://sernap.gob.bo/noelkempffmercado/
Archipiélago de Revillagigedo: In the official Mexican Tourism Board webpage I found nothing, not even searching through the state the islands belong to (Colima).
However, this one, from México desconocido is more or less complete and tourist-oriented https://www.mexicodesconocido.com.mx/las-islas-revillagigedo.html
This is less tourist oriented, but is in the official page of the SEMARNAT (Environment and Natural Resources Secretary) https://www.gob.mx/semarnat/articulos/reserva-de-la-biosfera-archipielago-de-revillagigedo
This one is more like the news when the site was inscribed https://www.gob.mx/semarnat/articulos/archipielago-de-revillagigedo-patrimonio-mundial-de-la-humanidad?idiom=es#:~:text=Se%20localiza%20en%20el%20Oc%C3%A9ano,Ramsar%20por%20su%20importancia%20internacional.
Mbanza Kongo: It's official, but it's more of information on a tourist tour that visits Mbanza Kongo https://www.pa-angola-tourism.com/english/tours/m-banza-congo/
Couldn't really find anything else.