Colosseum entrance views today only show you half the story: the tall, intact outer ring facing the Roman Forum, and, on the opposite side, a shorter inner wall standing where a matching outer ring once stood. I’d rather explain exactly why that gap exists before you arrive, since it’s a genuinely more interesting story than “old building crumbled.”
Why Does the Colosseum Look Different From Each Side?
The north side still shows the original four-tier outer wall in something close to its ancient form, while the south side lost its outer ring entirely, leaving the shorter inner structure exposed. That asymmetry is the first thing most first-time visitors notice and the first thing most guides get asked about.
I’d point this asymmetry out to anyone before their visit, since spotting it in person is a genuinely striking moment. You’re not looking at uniform decay, you’re looking at one side that survived largely intact next to one that lost an entire structural layer, and that contrast alone tells you the damage wasn’t random.
Did an Earthquake Actually Destroy Part of the Colosseum?
Yes, more than one. A major earthquake in 847 CE caused significant structural damage, and another in 1349 CE brought down a large section of the outer ring on the building’s south side, the section most visibly missing today. Rome sits in a genuinely active seismic zone.
I wouldn’t underestimate how much of this damage traces directly to those two events. The 1349 quake in particular did the kind of structural harm that made stone quarrying, my next point, dramatically easier for everyone who came after.
Did Romans Really Steal Stone From the Colosseum?
Yes, extensively, over several centuries. After earthquakes loosened and toppled sections of the outer wall, Romans quarried the fallen travertine blocks and even the iron and bronze clamps that held the stones together, reusing that material in churches, palaces and other buildings across the city.
I think this is the fact that reframes the entire site for most visitors. What looks like simple erosion is largely deliberate human reuse, generations of Romans treating a collapsed monument as a convenient building-material quarry rather than a site to be preserved, which is a far more human story than decay alone.
What Specifically Got Removed From the Fallen Stone?
Beyond the travertine blocks themselves, scavengers targeted the metal clamps that had originally locked adjacent stones together, leaving visible pockmarks across the surviving walls where those clamps were pried out. Those small holes are still visible today if you know to look for them.
I’d tell you to look closely at the stonework on your visit rather than just taking in the building’s overall shape. Those pockmark scars are a direct, physical record of the scavenging, and noticing them turns an abstract historical fact into something you can literally point at.
Was the Colosseum Ever Deliberately Demolished?
Not in one deliberate act, no. The damage accumulated gradually across roughly a thousand years, through repeated earthquakes and ongoing, informal quarrying rather than any single organized demolition project. There was no one moment when the missing section came down at once.
I’d correct this misconception whenever it comes up, since it’s easy to picture a single dramatic collapse rather than the slower, centuries-long process that actually happened. The Colosseum’s damage looks less like an event and more like a very long, uneven process of decline and reuse.
Why Wasn’t the Colosseum Fully Repaired Over the Centuries?
For most of its post-Roman history, nobody had a strong incentive to repair it. The building had stopped hosting games, its stone was more immediately useful as free construction material, and organized historical preservation as a concept didn’t meaningfully exist in Rome until centuries later.
I wouldn’t judge past generations too harshly for this, even though it’s tempting from a modern preservation mindset. A structure with no active use and an abundant supply of pre-cut, high-quality stone was, from a purely practical standpoint, exactly the kind of resource medieval and Renaissance builders had every reason to draw from.
What Uses Did the Colosseum Serve Between Its Decline and Today?
At various points across the centuries, the building served as housing, workshops, a fortress for a noble Roman family, and even briefly a Christian shrine, long before serious preservation efforts began treating it as a monument worth protecting rather than a usable structure.
I’d say this string of reuses is actually the reason enough of the Colosseum survived for you to walk through today. A building that stayed useful to the people living around it, even in radically repurposed forms, had a far better survival chance than one simply left standing and ignored.
When Did Preservation Efforts Finally Begin?
Organized preservation work started roughly two centuries ago and has continued, with increasing sophistication, into recent decades: stabilizing at-risk sections, cleaning centuries of pollution grime, and reconstructing part of the arena floor so visitors get a clearer sense of the original playing surface.
I’d credit that shift in mindset, from usable resource to protected monument, as the turning point that stopped further loss. Everything you see intact today survived specifically because someone eventually decided this building was worth protecting rather than continuing to mine.
Does the Missing Section Affect What You Can Actually Visit Today?
Not meaningfully. The surviving structure, including the reconstructed arena floor section and the underground hypogeum below it, remains fully open to visitors regardless of which side of the outer ring you’re viewing it from. The missing section is a visual and historical detail, not an access limitation.
I wouldn’t let the asymmetry worry you about what you’ll actually get to see on a visit. What’s missing is a fascinating piece of the building’s history, but it has essentially no bearing on the tour experience itself, which still covers the full site.
Should the Missing Wall Change How You Photograph the Colosseum?
I’d actually use it deliberately. Shooting from the north side gives you the classic, near-complete silhouette most photos show, while a shot from the south captures the honest asymmetry and tells a more interesting visual story about the building’s real history.
I’d recommend getting both angles if your schedule allows it, rather than only chasing the postcard shot. The south-side view is the one that actually shows visitors what happened here, and I think that makes it the more meaningful photo of the two, even if it’s the less commonly shared one.
Frequently Asked Questions
Why is one side of the Colosseum shorter than the other?
Earthquakes, especially in 847 and 1349 CE, brought down the outer ring on the south side, while the north side’s original four-tier wall survived largely intact.
Did people actually steal stone from the Colosseum?
Yes. For centuries, Romans quarried fallen travertine blocks and metal clamps from earthquake-damaged sections and reused them in other buildings across the city.
Was the Colosseum ever intentionally demolished?
No. The damage built up gradually over roughly a thousand years through repeated earthquakes and ongoing informal quarrying rather than any single planned demolition.
Can you still visit the full Colosseum despite the missing wall?
Yes. The missing outer-ring section on the south side is a visual and historical detail; the reconstructed arena floor and the site’s main visitor areas remain fully accessible.
My Recommendation
I’d spend a minute looking for the pockmarked clamp holes and the asymmetry between the two sides on your visit, since noticing them turns an abstract fact into something you can actually point at in person. The Colosseum, Roman Forum & Palatine Hill Guided Tour is where I’d send you if you want a guide able to point out exactly which sections came down and when.
For the full construction-to-present arc this detail sits inside, my Colosseum history and facts guide is the natural next stop. If you’re curious about the gladiator side of the building’s history too, my gladiators at the Colosseum guide separates documented practice from the movie version. Readers still weighing which Colosseum tour fits your visit can compare every current tour and ticket in one place before booking. For the full documented history, see the Colosseum’s Wikipedia entry.
