St. Stephen's Basilica, Budapest 

St. Stephen's Basilica is a Roman Catholic basilica in Budapest, Hungary. It is named in honour of Stephen, the first King of Hungary (c 975-1038), whose supposed right hand is housed in the reliquary. It was the sixth largest church building in Hungary before 1920. Since the renaming of the primatial see, it's the co-cathedral of the Roman Catholic Archdiocese of Esztergom-Budapest. Today, it is the third largest church building in present-day Hungary.