Question: Which cathedral that features the Gero cross is a renowned monument of German Catholicism  and Gothic Architecture?
Sentence (from "Cologne Cathedral"): Cologne Cathedral (German: "Kölner Dom" , officially "Hohe Domkirche Sankt Petrus ", Latin: "Ecclesia Cathedralis Sanctorum Petri" , English: Cathedral Church of Saint Peter) is a Roman Catholic cathedral in Cologne, Germany.
Relevant evidence: No