Basílica e Mosteiro de São Bento in Olinda is a stunning UNESCO World Heritage site known for its magnificent gilded Baroque altar and the Benedictine monks' Gregorian chants, particularly on Sunday mornings. While entrance to the Basilica is typically free (donations appreciated), visitors should budget for transportation to Olinda and potential guided tours of the wider city. A visit generally lasts 30 minutes to an hour, though attending a chant session will extend this. The location, set atop a hill in the historic center, involves navigating steep, cobblestone streets, which may present accessibility challenges for some; solo exploration is feasible, but guided tours offer deeper historical context. The Basilica is open year-round, though hours may vary, and checking the schedule for chant performances is highly recommended for a truly enriching experience. Respectful attire is advised.