The world's largest Gothic cathedral, St. John the Divine has been a work in progress since 1892. Its sheer size is amazing enough -- a nave that stretches two football fields and a seating capacity of 5,000 -- but keep in mind that there is no steel structural support. The church is being built using traditional Gothic engineering; blocks of granite and limestone are carved out by master masons and their apprentices -- which may explain why construction is still ongoing, more than 100 years after it began, with no end in sight. In fact, a December 2001 fire destroyed the north transept, which housed the gift shop. But this phoenix rose from the ashes quickly; the cathedral was reopened to visitors within a month, even though the scent of charred wood was still in the air and restoration will not be complete for months to come. That's precisely what makes this place so wonderful: Finishing isn't necessarily the point.

Though the seat of the Episcopal Diocese of New York, St. John's embraces an interfaith tradition. Internationalism is a theme found throughout the cathedral's iconography. Each chapel is dedicated to a different national, ethnic, or social group. The genocide memorial in the Missionary chapel -- dedicated to the victims of the Ottoman Empire in Armenia (1915-23), of the Holocaust (1939-45), and in Bosnia-Herzegovina since 1992 -- moved me to tears, as did the FDNY memorial in the Labor chapel. Although it was originally conceived to honor 12 firefighters killed in 1966, hundreds of personal notecards and trinkets of remembrance have evolved it into a moving tribute to the 343 firefighting heroes killed on September 11, 2001.

You can explore the cathedral on your own, or on the Public Tour, offered 6 days a week; also inquire about periodic (usually twice-monthly) Vertical Tours, which takes you on a hike up the 11-flight circular staircase to the top, for spectacular views, at press time were still suspended due to the fire. Check the website for updates. St. John the Divine is also known for presenting outstanding workshops, musical events, and important speakers. The free New Year's Eve concert draws thousands of New Yorkers; so, too, does its annual Feast of St. Francis (Blessing of the Animals), held in early October. Call for event information and tickets. To hear the incredible pipe organ in action, attend the weekly Choral Evensong and Organ Meditation service, which highlights one of the nation's most treasured pipe organs, Sundays at 6pm.