Cusco Cathedral stands as a majestic testament to colonial grandeur built atop Incan foundations. This UNESCO World Heritage site dominates the Plaza de Armas with its intricate baroque facade and soaring twin towers. Inside, visitors marvel at the ornate altar carved from a single block of stone and vibrant paintings from the renowned Cusco School. The cathedral houses priceless artifacts, including a massive silver tabernacle and local artistic treasures blending Catholic and indigenous motifs. Climbing the bell tower offers sweeping views of red-tiled roofs against the Andean skyline, making it an essential stop for anyone exploring the historic charm of Cusco before trekking to Machu Picchu.