Now you see it.......................

Most of Roman York  is buried under the modern city, and nowhere is this better illustrated than in the Museum Gardens. Here is the Multangular Tower dating from the time of Constantine (declared Roman Emperor in York in AD 306). The lower part of the tower consisting of small bricks is entirely Roman, the upper part of large blocks is 14th century. 

Until 1831 when it was 're-discovered' by the Yorkshire Philosophical Society the medieval windows were at ground level with the Roman tower buried under centuries of accumulated debris.