Wikipedia
The Roman town of Cunetio, located across the River Kennet from the modern town of Mildenhall, Wiltshire, England, was occupied from the 2nd century AD until the end of the Roman period in the early 5th century, when it was apparently abandoned.
Its location was identified from aerial photos of crop marks taken in 1940, and the site has been sporadically excavated since the 1950s. In the 1960s, a small coin hoard was found, followed in 1978 by the much larger Cunetio Hoard of over 55,000 coins. The site was dug in 2009 by Channel 4's archaeological television programme Time Team, which found many more coins and other objects.
The town grew around a mansio, built near a crossroad. Later in the town's evolution, a straight-road planned grid area was built, but by the 4th century, when some substantial town walls were erected, the planned streets lay outside the new walls and had presumably been abandoned by then.