Gated off from the rest of Las Colinas in Irving sits the former Exxon Mobil headquarters compound — a 290-acre master-planned campus centered around a large, slate-roofed, granite-exterior office building where former CEO Rex Tillerson and other titans of the energy industry once held court. Here's the plan to find a new tenant for the unique property when Exxon vacates it by the end of the year.
