The Most Remarkable Ancient Archaeological Sites in Italy
9 places · updated 14 October 2026
In short: By our ranking, the most remarkable ancient archaeological sites in Italy are Colosseum, Roman Forum and Castel Sant'Angelo. The list covers 9 ancient archaeological sites. Last updated 14 October 2026.
Italy holds the ancient world in layers. The south was settled by Greek colonists who built temples to rival those of Greece itself, Rome grew from a cluster of hills into the capital of an empire, and Roman engineers mastered concrete, the arch and the dome. Because Rome never stopped being a city, its monuments survived by being reused: as churches, fortresses and quarries. Vesuvius preserved the rest in a single day. Few countries let a visitor walk through so many centuries of antiquity in the open air.
The Colosseum, inaugurated in 80 AD under Titus, could hold tens of thousands of spectators, and its travertine shell still defines the image of Rome. Beside it the Roman Forum, the city's civic heart, gathers temples, basilicas and triumphal arches along the Sacred Way. The Pantheon, rebuilt under Hadrian, keeps its original roof: an unreinforced concrete dome opened to the sky by a single oculus. Trajan's Column spirals its relief of the Dacian Wars above the emperor's forum.
Castel Sant'Angelo began as Hadrian's mausoleum and became a papal fortress linked to the Vatican by a raised corridor. Pompeii, buried by Vesuvius in 79 AD, preserves an entire Roman town of streets, houses and painted walls. At Paestum, south of Naples, three Doric temples of the Greek colony of Poseidonia stand among the best-preserved Greek temples anywhere.
In this list
| # | Place | Type | UNESCO |
|---|---|---|---|
| 1 | Colosseum | Archaeological site | |
| 2 | Roman Forum | Archaeological site | |
| 3 | Castel Sant'Angelo | Castle | |
| 4 | Trajan's Column | Sculpture | |
| 5 | Pompeii | Archaeological site | |
| 6 | Trajan's Market | Ruins | |
| 7 | Paestum | Archaeological site | ✓ |
| 8 | Pantheon, Rome | Archaeological site | |
| 9 | Domus Aurea | Ruins |
01 Colosseum
Colosseo
Italy · 1.2 km from Rome41.890° N 12.492° E
Image by MARTINOPHUC from Pixabay The eighty-foot drop beneath the Colosseum's sand floor is where the real machinery of the show lived.
Did you know? It held an estimated 50,000 to 80,000 spectators, making it the largest amphitheatre ever built in the ancient world.
02 Roman Forum
Foro Romano
Italy · 0.7 km from Rome41.892° N 12.485° E
Image by jensjunge from Pixabay The Roman Forum fills a small valley between the Palatine and Capitoline hills that was once a marsh. Drained in the 7th century BC by the first stretch of the Cloaca Maxima, the great sewer that emptied into the Tiber, it became the place where Rome did everything in public: voted, traded, tried criminals, heard speeches, worshipped and celebrated its triumphs.
Did you know? Long before it was a public square, part of the Forum served as an Iron Age cemetery in the 10th century BC, with cremation urns buried in large clay jars.
03 Castel Sant'Angelo
Italy · 1.4 km from Rome41.903° N 12.466° E
Image by rainhard2 from Pixabay Hadrian started building his own tomb in 123 CE and didn't live to see it finished — it was completed in 139 under his successor Antoninus Pius, a cylindrical drum of a monument meant to hold the ashes of an emperor and his family for eternity. Eternity lasted about three centuries as a mausoleum.
Did you know? The current bronze angel by Peter Anton von Verschaffelt replaced a 1536 marble Saint Michael by Raffaello da Montelupo in 1753.
04 Trajan's Column
Colonna Traiana
Italy · 0.3 km from Rome41.896° N 12.484° E
Raffaele pagani · CC BY-SA 4.0 Trajan's Column is a 30-metre marble shaft, 35 m with its pedestal, that has stood in Trajan's Forum just north of the Roman Forum since it was dedicated on 12 May 113. It celebrates Emperor Trajan's two wars against the Dacians in 101-102 and 105-106, and it was most likely designed under the architect Apollodorus of Damascus.
Did you know? The lettering of the dedication on the base became the classic model of Roman square capitals, and Carol Twombly based her 1989 Trajan typeface on it.
05 Pompeii
Pompei
Italy · 23.2 km from Naples40.751° N 14.490° E
Glen Scarborough from The Central Coast, Australia · CC BY 2.0 Pompeii is the most complete picture we have of an ordinary Roman town, and it owes that to the catastrophe that ended it. In AD 79 Vesuvius, about 8 km away, erupted for two days. First came some eighteen hours of falling pumice, which let many of the inhabitants flee; then surges of superheated gas and ash swept through the streets and killed those who had stayed.
Did you know? After Sulla captured the town in 89 BC it became a colony of his veterans, renamed Colonia Cornelia Veneria Pompeianorum.
06 Trajan's Market
Mercati di Traiano
Italy · 0.5 km from Rome41.896° N 12.486° E
NikonZ7II · CC BY-SA 4.0 Trajan's Market is a curved cliff of Roman brick set into the side of the Quirinal Hill, above the ruins of Trajan's Forum and across Via dei Fori Imperiali from the Vittoriano. It was probably built between about AD 100 and 110, most likely to designs by Apollodorus of Damascus, Trajan's architect for the forum and for his campaigns, and inaugurated in 113.
07 Paestum
Italy · 34.9 km from Salerno40.423° N 15.006° E
- UNESCO World Heritage
Image by SCAPIN from Pixabay Paestum, on the plain south of Salerno, has three Greek temples in the Doric order that are among the best preserved anywhere, standing in open fields inside an almost complete ring of ancient walls. Settlers from Sybaris founded the city around 600 BCE as Poseidonia; the Lucanians took it at the end of the 5th century BCE, and Rome made it a Latin colony called Paestum in 273 BCE.
Did you know? Only about 25 of the city's roughly 120 hectares have been excavated; the rest lies under private land, still unexplored.
08 Pantheon, Rome
Pantheon
Italy · 0.4 km from Rome41.899° N 12.477° E
Image by falcon505 from Pixabay The Pantheon is the best-preserved great building of ancient Rome, and its interior is one of the most perfect spaces ever built. The temple first raised by Marcus Agrippa under Augustus burned down; the building that stands today was reconstructed under the emperor Hadrian and completed around AD 126.
Did you know? Two small bell towers added in the 17th century were mocked by Romans as ass's ears and finally taken down in 1883.
09 Domus Aurea
Italy · 1.4 km from Rome41.891° N 12.495° E
Unknown author Unknown author · Public domain Buried under the Oppian Hill, a stone's throw from the Colosseum, lie the vaulted halls of the most extravagant palace ancient Rome ever saw.
Did you know? An artificial lake in Nero's grounds occupied the valley where the Colosseum was later built.
How this list is ranked
Places are chosen for how they look, not for how famous they are: each one has its own description and a photograph credited to its author. The order is a single world ranking that weighs the beauty of the place in curated photography together with how widely it is documented — the number of language editions of its encyclopedia article and how often that article is read in a year. The list is rebuilt as places are added, so the order and the counts on this page are always current.
Questions people ask
- What are the most remarkable ancient archaeological sites in Italy?
- On our list, Colosseum ranks first, followed by Roman Forum and Castel Sant'Angelo.
- Is the Pantheon's dome still the largest of its kind?
- Yes. Nearly two thousand years after it was built, the Pantheon's dome remains the largest unreinforced concrete dome in the world, with a diameter of about 43 metres.
- When was Pompeii rediscovered?
- Systematic excavation began in 1748 under the Bourbon kings of Naples. About two thirds of the city has been uncovered since then.
- Why are there Greek temples in southern Italy?
- From the eighth century BC Greek cities founded colonies across southern Italy and Sicily, a region the Romans called Magna Graecia. Paestum, Agrigento and Segesta preserve temples built by these colonists.
- How many ancient archaeological sites are on this list in Italy?
- The list covers 9 ancient archaeological sites.