Of the numerous churches in the city the most interesting are the Stiftskirche, with two towers, a fine specimen of 15th-century Gothic; the Leonhardskirche, also a Gothic building of the 15th century; the Hospitalkirche, restored in 1841, the cloisters of which contain the tomb of Johann Reuchlin; the fine modern Gothic church of St John; the new Roman Catholic church of St Nicholas; the Friedenskirche; and the English church.
It is the headquarters of a military command, and the residence of a Roman Catholic bishop; its principal buildings are the cathedral, military college, arsenal and observatory.
At the present time, so far as the Roman Catholic Church is concerned, apparelled albs are only in regular use at Milan (Ambrosian Rite), and, partially, in certain churches in Spain.
The churches are numerous and some are particularly handsome; such as the First church, which overlooks the harbour, and is so named from its standing on the site of the church of the original settlers; St Paul's, Knox church and the Roman Catholic cathedral of St Joseph.
The substance of the claim to infallibility made by the Roman Catholic Church is that the Church and the pope cannot err when solemnly enunciating, as binding on all the faithful, a decision on a question of faith or morals.