True Harry Potter fans will recognize this place immediately, even without the famous phone box which you use to enter the Ministry of Magic.
Otherwise, it is also known as the rear entrance to the original headquarters of the iconic Metropolitan Police Service of London, hence the name.
Wikipedia https://en.wikipedia.org/wiki/Great_Scotland_Yard
Address City of Westminster, SW1A 2HJ London, UK
Coordinates 51°30'22.837" N -0°7'33.033" E