Old Sarum in Salisbury, the UK, is rich with history, dating back 5,000 years. During the Iron Age, it became the site of a hill fort, during the Roman occupation of Britain hundreds of years later, it became a military outpost and, during the Middle Ages, the site of a bustling city.
Although much of these ruins have been excavated over the years, there are sections that remained underground: the Inner and Outer Baileys of the ancient hillfort, where a city arose in the 11th Century, complete with a castle and cathedral — and stood for over 300 years, declining in the 13th century when New Sarum — Salisbury — rose, and the city relocated.
Although the existence of this city was known, its layout was not — and now a number of surveys have revealed the network of buildings — including what was probably one of the largest royal palaces of the time.
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