Saint Andrew's Cathedral is the main Orthodox church of Kronstadt, an 18th-century building of considerable historical weight. It is most famous as the church of Father John of Kronstadt — Ivan Ilyich Sergiev — who was the parish priest here from 1855 until his death in 1908 and became one of the most remarkable figures in the history of Russian Orthodoxy.
The cathedral was largely demolished by Soviet authorities in 1932 and has been rebuilt in recent decades. It now functions as an active parish church and a place of pilgrimage for devotees of Father John, whose memory is still actively venerated across the Russian Orthodox world. The rebuilt interior is functional rather than historically rich, but the site's associations are powerful for those who know the story.