Is it true that Hadrian's Wall is a famous UNESCO World Heritage Site?

Hadrian's Wall is definitely a big deal, and it's absolutely true that it's a UNESCO World Heritage Site. Think of it as a massive, ancient border control system built by the Roman Emperor Hadrian way back in the 2nd century AD, around 122 AD to be precise. He ordered its construction to mark the northern boundary of the Roman Empire in Britain and to keep out the Picts from what is now Scotland. It stretched for about 73 miles across northern England, a really impressive feat of engineering for its time. Now, UNESCO World Heritage status is given to places of outstanding universal value, meaning they're important to all of humanity. Hadrian's Wall earned this recognition in 1987 because it's one of the best-preserved examples of a Roman frontier. It gives us incredible insights into Roman military organization, life on the frontier, and the interaction between Romans and the native British population. So, it's not just an old wall; it's a window into a fascinating period of history, which is why it's protected and celebrated worldwide.