The plan was to demolish the old office building at 85 Gracechurch Street in the heart of London’s financial district and construct a new 32-story tower in its place. But as demolition began, archaeologists made a staggering discovery in the site’s foundation: remarkably intact ruins of London’s first public building,

An office building from the 1930s in London was about to be demolished — until remnants of the city’s first Roman basilica were found in the basement.