Go there at dawn.
The Plains of Abraham are located in what is now downtown Quebec City, Canada, immediately adjacent to the Citadel of Quebec and the walls of the Old City.
While the open spaces of this aesthetically pleasing park are easy on the eyes at any hour, to open your mind to the long lines of Redcoats on the western end of the plain, and the serried ranks of the White-frocked Frenchmen opposing them with their backs to the city wall, you really need to be alone. You need to see the space, the battlements beyond, without the Frisbee tossing college students and the glazed-eyed lovers crisscrossing the bloody battlefield before your eyes.