Every fan of the 1973 horror movie The Exorcist will surely recognize these steep steps as the setting of the climactic final scene. You should locate the stairs easily enough, as its bottom is situated in front of a gas station.
Wikipedia https://en.wikipedia.org/wiki/Exorcist_steps
Address 3600 Prospect St NW, Washington 20007, United States
Coordinates 38°54'20.477" N -77°4'13.559" E