It was not the stones and mortar that impressed them most but what the city and that place of worship represented.
وَبِشَكْلٍ مُمَاثِلٍ ،‏ يَنْبَغِي أَنْ يَبْذُلَ مُوَاطِنُو ٱلْمَلَكُوتِ وُسْعَهُمْ لِيَتَعَلَّمُوا عَنْ مَلَكُوتِ ٱللهِ .‏