The Templo del Carmen is one of the most ornate church facades in all of Mexico, completed in 1764 and declared a National Monument. The Churrigueresque exterior is a riot of sculpted saints, foliage, and geometric detail in carved stone — the kind of architecture that demands you stop and look for fifteen minutes to start taking in the layers.
The interior is comparatively calm: a single nave with an elaborate gilded altarpiece dedicated to the Seven Princes. The adjoining Plaza del Carmen is one of the city's most pleasant squares, flanked also by the Teatro de la Paz and the Museo Nacional de la Máscara. On Sunday mornings, the area fills with families and a small informal market.