Rather humdrum from the outside, the Basílica Santuario de Nazaré has a truly spectacular interior. Sink into a cushioned pew and admire the soaring marble columns, brilliant stained-glass windows and ornate wood and tile work in every direction, even the ceiling. The basilica is the focal point of Brazil’s largest religious festival, Círio de Nazaré, which draws more than a million worshippers to Belém on the second Sunday in October.