Analysis of information sources in references of the Wikipedia article "Cung điện Westminster" in Vietnamese language version.
Tsar Nicholas I of Russia called it un reve en pierre (a dream in stone), and that is the romantic impression it must have created upon many millions of sightseers.
The Palace of Westminster is therefore Crown land because it is land in which there is a Crown interest, in this case an interest belonging to Her Majesty in right of the Crown.