Here's the Religious structure, Christian category link
for those who need it.
Agree that Latin America is probably better represented via Cathedrals included in cities/towns likely to be included. in my understanding and experience Leon Cath isn't strong enough on its own.A point worth bearing in mind for all "individual building" WHS during this exercise I think!!
I've thought the same thing about this category. There are several iconic cathedrals--including some no longer in use--covered in other categories, such as Notre Dame de Paris, the Duomo of Florence, Moscow's Saint Basil's Cathedral, and Hagia Sophia in Istanbul. With that in mind, these are some of the cathedrals I'd choose:
1. Aachen Cathedral -- Charlemagne built and was buried in this German cathedral; also one of the first twelve inscribed World Heritage Sites
2. Canterbury -- seat of the spiritual head of the Church of England; also the site where Christianity was introduced to England
3. Chartres Cathedral -- incredibly beautiful Gothic-style cathedral in France
4. Cologne Cathedral -- iconic Gothic-style cathedral in Germany
5. Kiev -- Saint Sophia is a beautiful Eastern Orthodox cathedral with Byzantine art
6. Vatican City -- St. Peter's Basilica is apparently not technically a cathedral, since it is not the seat of a bishop, but it is an icon of Renaissance architecture and is known for its papal use; it is also one of the largest churches in the world
7. Piazza del Duomo -- I'm not voting for this because of the cathedral, but I am voting for this because of the impressive architecture of the Tower of Pisa and the Baptistry; this is the only category in which to recognize this site