The Duomo is massive, Gothic, and genuinely impressive up close. Expect to spend 45–90 minutes inside the cathedral itself, longer if you climb to the roof. The interior feels vast and somber with beautiful stained glass. The real highlight for most people is walking on the rooftop terraces among the spires and statues with sweeping views over Milan. The archaeological area underneath is interesting for history buffs but skippable if you're short on time. Crowds are heavy; you'll be shoulder-to-shoulder in peak season.
Best time to visit is spring (April–June) or early autumn (September–October). Summers are hot and crowded, especially on the roof. Go early in the morning or late afternoon to avoid the worst lines. Expect to pay around €20–€45 depending on what you choose: basic cathedral entry is cheapest, while adding rooftop access (stairs or lift) pushes it higher. Full guided tours of the complex usually land in the middle to upper end of that range.
Honest tip: Get the ticket that includes the rooftop via elevator if you hate stairs – the climb is long and steep. Skip the underground archaeological area unless you're really into early Christian ruins. Buy skip-the-line tickets in advance; the regular queue can easily waste an hour of your day.
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