Castel Sant'Angelo

Castel Sant'Angelo is a great cylindrical fortress on the right bank of the Tiber in Rome, a building whose form has been reinvented across nearly nineteen centuries. It began around 139 AD as the colossal drum-shaped mausoleum of Emperor Hadrian and his successors, was later absorbed into the city walls as a military stronghold, and in the Middle Ages became a papal castle, prison and refuge, linked to the Vatican by the Passetto di Borgo, an elevated escape corridor along which popes fled during sieges. Visitors enter at the base and follow a spiralling ramp, originally built for Hadrian's funeral procession, up through the heart of the structure to a sequence of frescoed Renaissance papal apartments, treasury rooms where the Vatican's wealth was once hidden, and grim cells that held famous prisoners. The climb ends on the open rooftop terrace, crowned by the bronze statue of the Archangel Michael that gives the castle its name, where one of the finest panoramas in Rome opens up over St Peter's dome, the Tiber bends and the rooftops of the historic centre. A visit takes about 90 minutes to two hours. The approach itself is memorable: the pedestrian Ponte Sant'Angelo carries visitors across the river lined by ten angel statues designed by Bernini. The site is busiest in the middle of the day; late afternoon is quieter and bathes the brick in golden light, making it a favourite for sunset, while photographers prize the rooftop and the bridge below. Tickets can be bought on site or online to skip the queue, and the castle connects easily on foot with the Vatican and the Trastevere quarter across the river. As a layered monument spanning Imperial, papal and modern Italy, Castel Sant'Angelo offers history, drama and one of the city's best views in a single visit.