St. Patrick's Cathedral is a magnificent Gothic Revival Roman Catholic cathedral on Fifth Avenue in Midtown Manhattan, serving as the seat of the Archdiocese of New York and a symbol of faith and architectural grandeur.Designed by architect James Renwick Jr., its construction began in 1858 and was completed in 1879 to accommodate the growing Catholic population, replacing the earlier St. Patrick's Old Cathedral. Known for its awe-inspiring spires, intricate stained-glass windows, and grand scale, the cathedral is both a place of worship and a cultural landmark.