Many visitors to Rome see the enormous Vittorio Emanuele II monument from the outside only, snapping a photo of the landmark locals often derisively call “the typewriter” before moving on. But if you climb the steps, you'll find there are sights to see inside, too.
The monument was completed in 1910 as a memorial to the first king of a united Italy. Italy's Tomb of the Unknown Soldier is part of the monument, added in 1921, and the Museo Centrale del Risorgimento – Museum of Italian Unification – is inside the monument itself. The museum entry can be difficult to find, with unmarked doors on the main steps, but you can also enter from via San Pietro in Carcere.
Also inside the monument is the Complesso del Vittoriano, an art gallery with rotating exhibits, and the Sagrario delle Bandiere, a gallery of Italian naval flags and some other historical naval displays. Another attraction inside the Vittoriano is the Roma del Cielo elevator that takes you to the top of the monument itself so you can enjoy views over Rome in all directions.
The Vittoriano is open daily in the winter from 9:30am-4:30pm. Each museum has slightly different open hours, some of which are later than the monument's hours. The Museo Centrale del Risorgimento and Sagrario delle Bandiere are both free to enter. The elevator to the top of the monument costs €7 for adults, €3.50 for seniors and children 10-18. The Vittoriano is located right on Piazza Venezia.