The Colosseum, Eternal Monument

one of the Seven Wonders of the Modern World

With this guide, you will discover the Colosseum not just as an extraordinary archaeological monument, but as a “living gateway” to understanding Roman greatness.
What you will find: how to visit this masterpiece, the latest excavations, fascinating stories, and tours that make each visit unforgettable.

Contents

Rome and its universal heritage

Visit the Colosseum

The first Sunday of every month, the Colosseum is open for free visits; however, without the possibility to book, the queue may be very long, especially during certain times of the year.

To avoid lines we recommend making a reservation.
Best Times: early in the morning (at 8:30 when it opens) or during lunch break (at 14:00) when tourist flow is lower.

Book a tour of the Colosseum: Argiletum Tour offers private tours at the Colosseum with skip-the-line access that includes a specialized archaeological guide. Our Colosseum and Ancient Rome tours allow you to explore the monument with expert guides, covering in about 3 hours the Colosseum, the Roman Forum, Palatine Hill, and the Imperial Fora.

Visit our Colosseum tour or contact us for customized itineraries.

New Hypogean Sections

An incredible new feature for visitors is the opening of new hypogean sections (underground) of the Colosseum. In 2025, the Archaeological Park of the Colosseum completed the museumization of a new portion of the hypogea, continuing an ambitious project to reinterpret the monument.

This new exhibition section allows for understanding the hypogean hydraulic systems of the amphitheater, uncovered through research conducted since 2022 in collaboration with “La Sapienza” University of Rome, the Department of Ancient Sciences, and private structures specialized in restoration.

The Harbingers

From Nerone to the Flavians

To understand the Colosseum, one must start with Nero and his infamous Domus Aurea (“Golden House”), the imperial palace built after the great fire of Rome in 64 A.D.

Read our article on the Domus Aurea

The eccentric emperor (37-68 A.D.) drained a vast area between the Palatine, Esquiline, and Caelian hills, creating an artificial lake (stagnum) of extraordinary beauty, surrounded by paradise-like gardens, woods, vineyards, and architectural wonders. According to the poet Martial, a contemporary of Nero, the Domus Aurea was such a grand structure that it would take an entire generation to visit it completely.

However, Nero’s reign ended dramatically in 68 A.D. with his death (officially suicide), followed by a period of political instability. When Titus Flavius Vespasian came to power in 70 A.D., he recognized the popular discontent: the lands of the Domus Aurea, hastily taken by the nobility, had heightened the resentment of the Roman populace.

Return the Space to the People

The Vision of Vespasian

moneta-romana-80-dc-colosseo
Roman coin 80 AD - inauguration of the Colosseum

The decision of Vespasian to construct a public amphitheater open to all on the location of Nero’s pond was a masterful political strategy. By symbolically dismantling the oppressive palace and restoring that area to the populace, the emperor won the support of the citizens while honoring military achievements: the funds derived from the plunder of the Temple of Jerusalem (70 AD), when his son Titus’s forces captured the Judean city during the Jewish uprising, financed the project.

Construction began between 70 and 71 AD and took just 9 years to finish, an impressive achievement given its scale and intricacy.

The Triumphal Inauguration (80 AD)

Vespasian passed away in 79 AD without witnessing the completion of the monument. It was his son Titus who officially inaugurated the amphitheater on April 21, 80 AD, celebrating with 100 days of non-stop games featuring 5,000 wild animals (lions, tigers, rhinoceroses, giraffes, elephants), gladiators, pirate ships (for naval battles in the flooded arena), and even the execution of Christians turned into spectacles.

These games were financed with enormous amounts of money and epitomized the peak of Roman imperial authority. Martial chronicled the events in his poems, illustrating how the arena was transformed into a sea with real ships engaging in battle, while the spectators experienced displays of extraordinary grandeur.

The Completion under Domitian

Additional modifications and final touches were completed under Domitian (81-96 AD), the final emperor of the Flavian dynasty, who incorporated significant structural enhancements, particularly in the hypogean (subterranean) systems and the creation of the Meta Sudans (a fountain shaped like a pyramid nearby).

Flavian Amphitheater

THE ROMAN CONSTRUCTIVE GENIUS

colosseo-piranesi
Colosseum, engraving by G. B. Piranesi

The Flavian Amphitheater (official name of the Colosseum) is a remarkable structure of astounding scale:

  • Outer perimeter: 545 meters
  • Major axis: 189 meters
  • Minor axis: 156 meters
  • Height: 48-52 meters (originally with the upper floor completely intact)
  • Internal area: 24,000 square meters
  • Arena surface: 76 x 46 meters
  • Capacity: Between 50,000 and 87,000 spectators, depending on the event configuration

It was the largest amphitheater of the ancient world and remains so to this day.

The Structure: Orders and Organization

The amphitheater was divided into four concentric orders (levels), reflecting the rigid social hierarchy of Rome:

OrderPositionUsage
I OrderFirst level, close to the arenaSenators, magistrates, priests
II OrderSecond levelNobles and wealthy citizens
III OrderThird levelMiddle-ranking citizens
IV OrderHighest levelWomen of any rank, slaves, commoners

Colosseum Orders and Their Social Destinations

Each section was accessible through separate corridors (vomitoria), allowing the entire amphitheater to be evacuated in a matter of minutes – a masterpiece of logistical organization.

The Arena and the Underground

The arena (from Latin “harena”, meaning sand) was a wooden platform covered with sand, containing sophisticated hypogeal systems that fascinated the ancient Romans. Beneath the arena, there were:

  • Animal cages: Capable of housing even elephants
  • Hydraulic elevators: That lifted animals to the arena through pulley and weight systems
  • Drainage system: Sophisticated channels to control water when the arena was flooded
  • Storage for weapons and equipment: For gladiators and show operators

Recent research (2022-2025) has revealed the extraordinary complexity of these systems, with traces of sophisticated water management and evidence of animal conservation.

Materials and Construction Techniques

The Colosseum was built with remarkable technological innovation:

  • Travertine: Used for the structural frame; sourced from the quarries of Tivoli
  • Brick: For internal filling and arches
  • Roman concrete (opus caementicium): A mixture of volcanic ash, lime, and aggregates that became the hallmark of Roman engineering
  • Marble: For decorative facing (most of which was removed in the Middle Ages)
  • Iron: For clamps (metal braces) that held the blocks together

The quality of Roman concrete was such that some internal sections remain intact after nearly 2,000 years.

The Facade and Architectural Orders

Externally, the Colosseum featured a composition of four stacked orders:

  1. Doric order (lower): Sturdy columns
  2. Ionian order (second): Elegant columns
  3. Corinthian order (third): Columns adorned with acanthus
  4. Attic (top): Pillars with decorations

Between the columns, numerous archways (80 total on the outer perimeter) opened, each provided with a stone vault. The facade was entirely covered with shining travertine marble, an impressive statement of imperial power.

The Inaugural Games: 100 Days of Shows

THE GAMES AND THE LIFE OF THE MONUMENT

Borghese_villa_gladiator_mosaic

The inauguration of 80 A.D. under Titus was an unprecedented event. The games lasted for 100 consecutive days and represented the peak of Roman organization. The chronicles describe:

  • 9000 wild animals were imported from across the empire: African lions, Siberian tigers, rhinoceroses, hippos, giraffes, elephants, ostriches, bears
  • Naumachiae (naval battles): The arena was flooded, and real small ships battled each other in elaborate battle scenes
  • Venatio (animal hunts): Men (not always volunteer gladiators) hunted and fought wild animals
  • Public executions: Criminals and slaves were executed in dramatic scenes
  • Musical and dramatic performances: During the breaks between fights

Gladiators, Beastfighters, and Hunters

The Gladiators

Gladiators were fighters – slaves, condemned criminals, or occasionally free men who chose the profession for profit – who faced each other in ritual duels. Their lives followed a strict code:

  • Training in ludus (school): Under the supervision of weapon masters known as lanistae
  • Types of fighters: Retiarii (with nets), Murmillones (with short swords), Secutores (chasers), Samnites, and many others, each with characteristic weapons and styles
  • Victory or death: The winner received glory and monetary rewards; the loser was often killed, although sometimes he was spared for imperial mercy if the crowd demanded it (the famous “thumbs down”)

One of the most famous gladiators was Spartacus, who, although he died before the opening of the Colosseum, inspired the legendary revolt of 73-71 B.C. against Roman oppression.

The Beastfighters and Hunters

Beastfighters were specialists who fought wild animals, often with fatal results. Their fights were considered more spectacular than gladiatorial duels, especially when they faced lions or tigers.

The Sacrificed Victims

Modern research has revealed that not only criminals and slaves but also early Christians were publicly executed in the Colosseum. Although Christian tradition has exaggerated the numbers, it is historically established that the Colosseum was the site of persecution during the reigns of Nero and his successors.

The Daily Life of the Monument (80-500 A.D.)

For about four centuries, the Colosseum remained the center of public life in Rome, with games not only during inaugurations but also on religious festivals, imperial anniversaries, and military celebrations.

However, with the decline of the Roman Empire, the frequency of games diminished. With the adoption of Christianity in the 4th century A.D., the practice of gladiatorial combat was gradually banned, although animal shows continued for some time.

In 410 A.D., when the Visigoths under Alaric sacked Rome, the Colosseum suffered significant damage. Subsequently, with the final collapse of the Western Roman Empire in 476 A.D., the monument fell into neglect and was slowly stripped for its materials.

REDISCOVERY AND ENHANCEMENT

Middle Ages, Renaissance, Modern Era: From Oblivion to Rediscovery

Print of Rome in the Middle Ages - on the left, the Colosseum

During the Middle Ages, the Colosseum became a quarry for materials. Marble, travertine, and iron were systematically extracted to build churches, noble palaces, and other structures of medieval Rome. The structure further deteriorated due to frequent earthquakes, particularly those in the 12th and 16th centuries.

It was the Renaissance that rekindled interest in the monument. Artists like Michelangelo and Raphael studied the ruins of the Colosseum alongside other ancient structures, drawing inspiration for their creations.

In 1744, Pope Benedict XIV declared the Colosseum a consecrated place, protecting it from further plundering. The building was also dedicated to the Christian martyrs who were believed to have been killed in the monument.

Modern Era: Archaeological Excavations and Preservation

Systematic archaeological excavations began in the 19th century, particularly under the patronage of the Papal Government and later the Italian State. By 1913, the Colosseum was fully acquired by the Italian State.

Significant excavation and restoration campaigns have taken place in the 20th and 21st centuries, uncovering:

  • The complex underground systems
  • Details of the seating areas
  • Everyday life artifacts (fragments of pottery, coins, tools)
  • Evidence of structural modifications over time

International Recognitions

The Colosseum was listed as a UNESCO World Heritage Site in 1980, and in 2007 it was declared one of the New Seven Wonders of the World, confirming its status as the most iconic monument of Roman antiquity.

RECOMMENDED VISIT

The Complete Colosseum Experience with Argiletum Tour

For those looking for an in-depth guided experience of the monument, Argiletum Tour offers personalized and professional solutions.

Private Colosseum and Ancient Rome Tour

Our Private Colosseum and Ancient Rome Tour at your pace is specifically designed for those who want to truly understand the monument:

Duration: 3 hours
Departure: 9:30 AM or 2:00 PM (other times available upon request)
Included:

  • Specialized archaeological guide
  • Priority access (skip the line)
  • Visit to the Imperial Fora, Roman Forum, Palatine Hill
  • Walk through the Markets of Trajan and the Column of Trajan (masterpiece by architect Apollodorus of Damascus)

How to book: Visit our tour or contact us for customized itineraries.

THE COLOSSEUM

A WINDOW INTO ROMAN CIVILIZATION

Colosseo

The Colosseum is much more than an impressive ruin. It is an open window onto the complexity of Roman civilization: its architectural grandeur, the sophistication of its engineering, the brutality of its public spectacles, and its extraordinary ability to turn death into entertainment.
Every stone of the Colosseum tells stories of ambitious emperors, courageous (or coerced) gladiators, exotic animals transported from Africa and Asia, and millions of spectators who for centuries witnessed scenes swinging between the sublime and the horrific.
Visiting the Colosseum with Argiletum Tour allows you to access these stories not as a hurried tourist, but as a mindful traveler, accompanied by passionate guides who transform the stones into living narratives.

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