The most famous prehistoric monument in the world and a UNESCO World Heritage Site, Stonehenge stands alone on the vast Salisbury Plain. Its origins date back nearly 5,000 years, and it has been associated with prehistoric ritual, spiritual significance, and ongoing public debate ever since. (Entry included if entry option is selected.) An audio guide is available on-site in the following languages: English, French, German, Spanish, Italian, Dutch, Russian, Mandarin Chinese, Japanese, Korean, Portuguese, and Polish.