From I-5, take the La Jolla Village Drive exit.
Drive West on La Jolla Village Drive.
La Jolla Village Drive turns into North Torrey Pines Road.
Turn right on Muir College Drive (opposite Almahurst Row).
Turn left or right into either parking lot (Lots 302 and 207, respectively) after the first stop sign and park.
Walk back to Muir College Drive and continue along it in the direction that you were previously travelling until you reach the next stop sign and the road swings south.
Looking north up the walkway that begins at this point, the Economics Building will be in view: of the two buildings that are connected by a walkway bridge, it is the building on the right.