While the UK press has understandably trumpeted the Antonine Wall's success in achieving World Heritage Status (reports appeared, for example, in The Scotsman, The Guardian, The Times, and The Press Association), a glance at the official UNESCO press release reveals that we are just an "extension to an existing property".
The copy-editors at UNESCO haven't even punctuated us properly! We appear (somewhat breathlessly) as "Mountain Railways of India Paleolithic Cave Art of Northern Spain The Antonine Wall (United Kingdom)". El Pais newspaper understandably chose to emphasize the Palaeolithic Cave Art of Northern Spain, an extension to the Cave of Altamira, inscribed in 1985. And I don't know about the Indian newspapers, but the Philippine Daily Enquirer didn't even mention us at all!
I suppose when you're an old Roman emperor, it's easy to lose perspective.