The house I used to live in at Staines was built where a plane departing Heathrow came down (built some considerable time after the crash I hasten to add, but there was a suspicious mound in the garden which I never investigated).
The Old Bailey is built on the site of Newgate Prison amd Marble Arch is where Tyburn Gallows once was.
Kings Cross Station and most of the other termini were built on thousands of slum dwellings.