You can tour the church on your own, or hire one of the independent guides near the entrance for a small fee. Inside, you can see huge ornamental screens, along with the body of the resident saint in a casket that was once covered in precious stones. It's a compelling place that will transport you back in time. Every year, the Feast of St. Francis Xavier draws big crowds to this church in late November and early December. It kicks off with a nine-day novena and open-air masses before concluding with the major holiday on Dec. 3.