Sacred Heart Cathedral is a quieter counterpoint to Ooty's gardens, lake, and tea-country viewpoints. The church reflects the hill station's colonial and missionary layers, with a cool interior, stained-glass details, and a setting that feels removed from the busiest tourist circuits.
It is a modest sight, but it clears the bar if you are already in town and interested in Ooty beyond the standard viewpoints. Combine it with a walk through the older streets rather than making a special trip across town just for the cathedral.