Milan Cathedral – The Duomo
You'll be thoroughly impressed as you approach Italy's largest church, the Duomo di Milano, also known as Milan Cathedral. At 108-meters high, 160-meters long, and 92-meters wide, it easily holds 40,000 people. Every inch of it is dripping with gothic gravitas. The true magnitude of the Duomo di Milano truly hits you when you're inside. It is adorned with artwork and religious ornaments, and you can see sarcophagi of luminaries from centuries gone by. It is also home to Italy's largest organ, which clocks in at a whopping 15,350 pipes.