I'm making a note for myself here, but other might be interested. It's occurred to me there's a very easy way to list sites on the tentative world heritage lists with an explicit astronomical connection. Just search for the word astronomy on the list. It's not rocket science.
It's not perfect either. The listing for Herat is tangential to astronomical heritage, but other entries are obviously relevant, like Astronomical Observatories of Ukraine and The Cape Arc of Meridian, South Africa.
One or two are new to me, so I have some reading to do.
UNESCO World Heritage Centre – Tentative Lists
UNESCO World Heritage Centre
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