The Cathedral of St. John the Divine is the biggest cathedral worldwide. The area totals 121,000 sq ft. Several highlights: the nave increases over 100 ft; the 1933 Rose Window features the theme of the Great Rose; the St. Ambrose Chapel is decorated with Renaissance-style ironwork; the choir columns stretch 55-ft. tall and so are crafted from refined gray granite; the portals of the eastern front entrance are adorned with stone designs and carvings some of which are re-creations of medieval spiritual sculptures.

The cathedral was originally developed in the Romanesque style by Heins and LaFarge and started building in 1901. By 1910, the first architects had died, and Ralph Adams Cram took over. Cram had created several buildings in Boston