The Great Hall of the Palace of Westminster has a medieval murder site - Apparently.
In the 13th century, a large section of the wooden floor in the Great Hall of the Palace of Westminster collapsed, revealing a hidden murder site beneath. Archaeologists later discovered the remains of a man, believed to be a noble, who had been brutally murdered in the 12th century. The site was discovered during a 1930s excavation and is now protected and preserved as part of the Palace of Westminster's historical heritage.