Enjoy expedited entry and a self-guided multi-lingual audio guide. You can listen to the audio tour and explore the Cathedral at your own pace. The audio tour is narrated by Cardinal Timothy Dolan and is about 1 hour long. It is recommended to allow up to 1.5 hours as you may wish to pause the audio tour at times to enjoy features like the Lady Chapel, the towering twin spires, and the 9000 lb. bronze doors which can be opened by a single person. You can also explore the main altar, the stained-glass windows and the Pieta sculpture, 3 times the size of Michelangelo's. The Cathedral has 21 altars and 19 bells, each named after a different saint. Babe Ruth, Andy Warhol and Robert F. Kennedy all had memorial masses here.