Chapultepec Woods, Hill and Castle by Kyle Magnuson
There are four sections to this park, and I am unsure what sections would be included in a world heritage bid. If you are a visitor to Mexico City you are unlikely to visit any section beyond the 1st. My visit included a relaxing walk through the park starting from Metro Constituyentes and ending with a visit to the Castillo.
As far as palaces go, I'm sure this particular palace shares many similar merits with already inscribed palaces. The most unique features are the excellent views of the surrounding vast park and cityscape, the stained glass hallway, and some of the grand murals. I enjoyed my time, but I have doubts about this TWHS every becoming a world heritage site. Nevertheless I had a pleasant time walking through this pleasant park and seeing masterful use of stained glass.