The Gianicolo is fundamental from a historical point of view, because it was used in the defense of the city and became the scene of Garibaldi's battle with the French troops.
Daily at noon, a cannon fires once from the Janiculum in the direction of the Tiber as a time signal. This tradition goes back to December 1847, when the cannon of the Castel Sant'Angelo gave the sign to the surrounding belltowers to start ringing at midday.
In addition to the truly breathtaking view, the following are worth seeing on the hill:
- the Fountain of Acqua Paola (Il Fontanone)
- the Manfredi Lighthouse
- the Church of San Pietro in Montorio
- the Monument to Garibaldi