⛪ Milan Cathedral (Duomo di Milano)

The rooftop terraces offer the chance to walk among Gothic spires with Alpine views on clear days. The Madonnina -- the golden statue of the Virgin Mary crowning the highest spire at 108 meters -- has protected Milan since 1774 and was traditionally the tallest point in the city (a law once required no building to rise above her). The stained glass windows represent the largest collection in the world, some dating to the 15th century. The St. Bartholomew Flayed statue by Marco d'Agrate is a disturbing anatomical sculpture depicting the saint carrying his own skin. The archaeological area beneath the Duomo reveals ruins of the 4th-century baptistery where St. Ambrose baptized St. Augustine.

Dress code enforced: shoulders and knees must be covered -- no shorts or tank tops. The stair climb (251 steps) is manageable for most and offers better views along the way than the elevator. Rooftop closes in bad weather -- check conditions before booking. Maintain respectful silence inside the cathedral during services.

Cathedral: daily 9 AM - 7 PM (last entry 6:10 PM). Rooftop terraces: daily 9 AM - 7 PM (last entry 6:10 PM). Museum: Thursday-Tuesday 10 AM - 6 PM. Best time: early morning or late afternoon for fewer crowds.

Cathedral only: €5. Rooftop by stairs: €14 (251 steps). Rooftop by elevator: €23. Duomo Pass: €25 (cathedral, rooftop stairs, museum, crypt). Guided tour: €40-60 per person with skip-the-line. Private guide: €200-350 for up to 6 people.

Guided groups access faster security queues. The 3,400 statues, stained glass stories, and hidden details are largely invisible without expert guidance. Combine with Galleria Vittorio Emanuele II -- the famous shopping arcade is steps away. Visit the Last Supper in the morning (book months ahead) and the Duomo in the afternoon. La Scala opera house faces the Galleria on the other side.