The cathedral at León, this is the best that I found: https://vianica.com/sp/atractivo/56/catedral-de-leon

I remember seeing a very good page on the Camino Real de Tierra Adentro some years ago, but it seems that they closed it after they achieved inscription. It listed all the proposed properties and had abundant information in each of them.

I'd seen this as well. Let's go for it.

Portobelo-San Lorenzo
Official website of the Municipio Colon, but not much information, only short descriptions in Spanish
http://municipiocolon.gob.pa/lugares-turisticos

Derbent
Official website of the city, only in Russian, not much information, some of the tourism pages are empty
http://www.derbent.ru/turistam/traffic_schedules/

Ahwar of Southern Iraq
A government website, but not much information: management plan and under the subheader "marshes" a short description of the four marsh locations with the maps from the Unesco website.
http://www.moen.gov.iq/marshes/Full-story

These are really bad. I wonder whether it would make any sense in adding them, they're of no help whatsoever.


Looks a little bit better than the other 2, but I fear that this was the nomination website and that it will never be updated. Sigh.

Agree, I guess that we can not find useful official websites for these sites.

Maybe it's best to present nothing then.

Here the official website of the Rila Monastery. Under "Contact us" you can find a phone number and Email where you can book accommodation:
https://rilskimanastir.org/en/

Here is the official website for Liangzhu Archeological Site. http://www.lzsite.cn/index.aspx
Information is all in chinese but it has all important info including booking a ticket.
The current one we have on the liangzhu page is of the museum, which is not in the core zone

http://www.yczrbhq.com/

For the migratory bird sanctuaries. Technically this is the biosphere reserve site but they added a UNESCO logo now :)