Thats a pretty far route, if you can get yourself to Landmark, instead of turning into Landmark go straight to the signals under the new underpass. Turn right onto the highway, go up to the next turn off under the second underpass and take the left hand turn. You will come to another small R/A, take the right (this R/A will have a massive palace on the left hand side).

After the right turn you go striaght, you will see it on your left at the R/A.

Good luck