A sovereign micro-state inside Rome and the centre of the Catholic faith: St Peter's Basilica, the Vatican Museums with the Sistine Chapel, the sweeping colonnades Bernini built, and the homely Roman quarters of Borgo and Prati that surround them.
Last updated August 23, 2026
In a nutshell: Vatican City is the world's smallest state, a walled enclave inside Rome created in 1929 and heir to the Renaissance Papal States, yet it packs more masterpieces per hectare than anywhere else on earth. The heart of any visit is St Peter's Basilica: Bernini's sweeping piazza, Michelangelo's dome and Pietà, the bronze baldachin and the tombs of the popes in the grottoes below. Next door, the Vatican Museums unroll 7 km of galleries - antique sculpture, the Raphael Rooms, the Gallery of Maps - before ending at the Sistine Chapel, whose ceiling and Last Judgment rank among the most famous paintings ever made; the same chapter covers the Vatican Gardens and the ancient necropolis beneath the hill. Over the river, Borgo and Prati gather the practical side of the district: Castel Sant'Angelo with its secret passage to the Vatican, the trattorias, wine bars and churches of the two rioni, and the answers on dress codes, queues and how to see the pope. The rest of Rome is near at hand: ancient Rome, the historic centre, the Tridente and Trastevere all sit within easy reach.
A tomb that became a fortress: the stocky cylinder on the Tiber was raised around AD 139 as the mausoleum of the emperor Hadrian, who picked the most commanding spot beyond the walls, across the river, so his resting place stayed clearly visible from the city. The original monument was a towering cylinder, roughly 64 by 21 metres, surmounted by a grove of cypresses and carrying a colossal statue of Hadrian driving a chariot on its crown; emperors kept arriving here for close to a century, from Hadrian himself to Caracalla, who was laid to rest in AD 217. The Archangel Michael was said to hover above the mausoleum in 590 before Gregory the Great; the sheathing of the sword signalled the end of the plague, which is how the fortress came to bear the name of the holy angel. Across the Middle Ages it worked as a fortress, a jail, and the final bolt-hole for popes in danger, its rooms dressed with papal splendour, hung with works by Carlo Crivelli, by Luca Signorelli and by Andrea Mantegna, and during the sack of 1527 the pope took shelter inside for months with an entourage of hundreds. In 1277, at the pope's behest, an elevated corridor, the Passetto, was added to connect the palace to the castle.
Visiting: a one-way circuit carries you through the monument's older and newer halves, and getting lost is impossible. Just before the ticket barrier stands the old ceremonial gateway, whose bare white travertine niche once displayed a statue of Hadrian greeting visitors to his tomb; you then climb in a spiral roughly 400 feet along the original ramp of the second century, whose height is enough for an emperor's grand urn, past the leftovers of a medieval lift installed for a heavy-set pope, and across the bridge above the sacred chamber, where the urns holding a century of imperial ashes once stood. A sunny courtyard above opens around a 16th-century figure of the archangel; the surrounding papal apartments include a suite called Apollo Throne Room, with its adjoining bedroom, whose fine ceilings are the work of artists from Raphael's circle, the Paolina Room, richly frescoed during the 1540s as the papacy's response to Martin Luther's revolt and the wider Reformation, the papal library, whose ceiling is painted with the grotesque motifs that became fashionable during the 1500s once Nero's Golden House was discovered, and the treasury, where a huge armoured chest fitted with 13 keys was set into the very fabric of the room, too large to be stolen by any invader. At last the rooftop terrace, topped by the archangel putting away his sword, rewards you with one of the finest panoramas in Rome: the river's great curve beneath you, St Peter's dome ahead, and the raised corridor that in times of attack let the pope slip across to this stronghold. On the way down, walk the rampart's four bastions, each bearing the name of one of the four Gospel writers.
Cost and hours: tickets cost €16; the castle is open Tuesday to Sunday from 9:00 to 19:30, shut on Mondays, with the final admission an hour before the gates close. Its address is Lungotevere Castello 50, ten minutes on foot from St Peter's Square; Metro Lepanto or buses 23, 40 and 64 stop nearby, and there is a café inside. The ticket window line moves fast; if a long queue stretches outside the gate, buy your ticket online and present the QR code at the door to sail straight in.