Can someone help me understanding this:

Before the WHC, the UNESCO website showed a total number of 1776 TWHS
At the session, 26 sites were inscribed and 2 were extended.
So I would expect a new total of 1748 TWHS. But they show 1750!

What am I overlooking?
I have checked all this year's new entries and these have been removed.

--- May have found it, they probably are the 2 latest Chinese additions. Our "old" database contained 1778 TWHS, minus 28 = 1750

UNESCO just updated its total to 1751

Good luck finding the extra one, it is not one of the most recent.
@jonathanfr - you are good at this!

Found it:
Persian Mosque 04/12/2024

5 more!
Oh no, 10
Oh no, 12

Yemen
Al Madrasah Al Amereyyah in Rada' 20/06/2025
Erf Mountain Natural Reserve 20/06/2025
Haid Al-Jazil and Wadi Daw'an, Hadramout 20/06/2025
Al-Qarrah City, Yafe' 20/06/2025
Archaeological Sites of the Kingdom of Qataban in Behan 20/06/2025
Habban City, Shabwah 20/06/2025
Balhaf/Burum Natural Reserve 20/06/2025
Biodiversity Sites in Hadramout 20/06/2025
Al Mokha City 20/06/2025
Dar Al Hajar 20/06/2025
Baraqish City Archaeological Site 20/06/2025
Agricultural Terraces in Yemen 20/06/2025

One is a replacement for: Balhaf/Burum coastal area

And another one coming in, did they do a workshop with the Houthis on heritage?
Historic City of Al-Mukalla 20/06/2025

Seems to be the outcome of these workshops. where "The sessions concluded with the proposal of 37 sites for nomination, ranging from archaeological sites, historic buildings, and fortifications to cultural landscapes and mixed and natural sites. ":
https://www.unesco.org/en/articles/unesco-and-arab-regional-centre-world-heritage-lead-efforts-revise-yemens-world-heritage-tentative

(I hope they will not add all 37...)
And there's #14.. I think I am going to cry....
What happened to the fine art of clustering and prioritizing?

And one has been removed as well:
European Paper Mills (from the era of hand-made paper) (Italy)

Quite a surprise. A mistake? (I think one more old one should be removed from Yemen's T List as it is double now with the new ones)
Or can we find something in the Italian news about this?

Two more:

Poland
Historical coal-mining complex in Zabrze (eighteenth–twentieth centuries) 18/07/2025

Lao People's Democratic Republic
Nakai – Nam Theun National Park (NNT NP) 30/06/2025

One removed from Yemen:
The Madrasa Amiriya of Rada (2002) (was double after the last update)

Some new ones today

Algeria
Le Parc culturel de la Saoura 18/08/2025

Poland
Historic Saltworks Complex in Ciechocinek 06/08/2025
Bobrka oil field – the heritage of the beginnings of the oil industry in the world 25/07/2025
The early modern Srebrna Góra Fortress as a perfect example of mountain massifs transformation 25/07/2025

6 more!

Brazil
- Protected Areas of the Caatinga Dry Tropical Forest 01/09/2025
- Golden Lion Tamarin Protected Areas 01/09/2025

Turkmenistan
- Karst, Canyons, and Caves of Kugitang 28/08/2025

Tajikistan
- Ancient City of Karon 22/08/2025

Uzbekistan
- Karst, Canyons and Caves of Kugitang 21/08/2025

Sri Lanka
- Sri Lanka's Tea Cultural Landscape 19/08/2025

https://whc.unesco.org/en/tentativelists/?&action=listtentative&pattern=&date_start=&date_end=&order=year

Ooh, I love this one!

7 from India:

- Naga Hill Ophiolite 27/08/2025
- Deccan Traps at Panchgani and Mahabaleshwar 27/08/2025
- Geological Heritage of St' Mary's Island Cluster 27/08/2025
- Meghalayan Age Caves 27/08/2025
- Natural Heritage of Erra Matti Dibbalu 27/08/2025
- Natural Heritage of Tirumala Hills 27/08/2025
- Natural Heritage of Varkala 27/08/2025

https://whc.unesco.org/en/tentativelists/?&action=listtentative&pattern=&date_start=&date_end=&order=year

Oh man, didn't they get the memo that I am travelling at the moment and the last thing I want to do is keep adding TWHS all day...

The Historic Astronomical Observatories of Ireland 12/09/2025

https://whc.unesco.org/en/tentativelists/6901/

- Birr Castle Demesne (Republic of Ireland)
- Dunsink Observatory (Republic of Ireland)
- Armagh Observatory (United Kingdom of Great Britain and Northern Ireland)

"Armagh Observatory, County Armagh is located in Ulster within the jurisdiction of the United Kingdom of Great Britain and Northern Ireland. It is the intention to develop this into a transnational serial nomination and bilateral discussion are currently underway with the competent State Party."