This is a short two-stage multi. Neither stage will require you to go onto museum property.
The posted coordinates will take you to a green junction box, near the entrance of the museum just off of the highway. On the south side of the junction box, you will see a series of 8 black letters/numbers on a yellow background.
The final is located at N 52° 57.UVW' W 113° 24.XYZ'
To find the value of "UVW" (the North coordinate for the final), take the first two black numbers (found before the "B") and add them to 579. To find the value of "XYZ" (the West coordinate for the final), take the last three black numbers (found before the "U") and subtract them from 880.
The final is located within 1km of the starting location. You can walk, but it might be easier if you drive to the final. Bring tweezers and a writing tool.