Is Palazzo Colonna the most beautiful palace in Rome?

That question has no answer and this site is not going to invent one. Beauty is not a fact, a ranking of Roman palaces by looks tells you about whoever wrote it, and I would be picking a winner among buildings I take people round for a living. What I can do is answer the checkable question people ask in the same breath. The largest palace on Earth depends on what you measure: by floor area it is the Louvre Palace at 244,000 m²; by the enclosed area inside its walls Guinness World Records gives the title to the Forbidden City at 728,000 m²; and the largest residential palace is Istana Nurul Iman in Brunei at 200,000 m². Palazzo Colonna is not in that conversation, and this page is not going to pretend it is.

Most beautifulNot a fact

Largest by floor areaThe Louvre Palace

Guinness, enclosed areaThe Forbidden City

Largest residentialIstana Nurul Iman

Palazzo ColonnaA private city palace

Open to the publicEight hours a week

Why there is no ranking on this page

I walk people through the palace galleries of this city most weeks. I have opinions about all of them and none of my opinions is information. Putting them in a numbered list would make them look like information, which is the whole problem with the format: the ranking is the part that gets screenshotted and the reasoning is the part that does not.

It would also be a strange thing for an affiliate site to do. The one building I earn anything from would come first, and you would be right to notice.

The largest-palace question, with all three measures

This one is answerable, and the reason it produces three different answers is that people are measuring three different things. Floor area, enclosed area within the walls, and floor area of a building somebody actually lives in are not the same quantity, so the title moves depending on which you pick.

Palace	Measure	Figure
Forbidden City	Enclosed area inside the walls — the Guinness World Records title	728,000 m²
Louvre Palace	Floor area — the largest on that measure	244,000 m²
Hofburg	Floor area	240,000 m²
Winter Palace	Floor area	233,345 m²
Istana Nurul Iman, Brunei	Floor area — the largest residential palace	200,000 m²
Apostolic Palace	Floor area	162,000 m²
Royal Palace of Madrid	Floor area	135,000 m²
Versailles	Floor area	63,154 m²

Note what the bottom of that table does to the question. Versailles — the building most people would name first if you asked them for a big palace — is smaller by floor area than five others on the list, and about a quarter of the Louvre. Size is a poor proxy for the thing people are actually asking about.

Where this building sits, which is nowhere near that list

Palazzo Colonna is a private city palace on a Roman street, between Piazza SS. Apostoli and Via della Pilotta, with a garden on the hill behind it reached by covered bridges over the road. It is not competing on square metres with anything above and its interest was never its size. Say so plainly and the comparison stops being embarrassing.

The reasons to choose it that can actually be checked

If you are deciding between palaces on a short trip, decide on things with answers.

What is in it. Carracci’s Beaneater, Bronzino, Tintoretto, Reni, Guercino, Rosa, Ghirlandaio and Dughet, with Pinturicchio and Brueghel in the apartments. The list, and which ticket reaches which.
How long it has been one family’s. Since the 1200s, and they still live in part of it. The family.
How the gallery was built. As a single room to be seen whole, which is a different experience from a suite of chambers. The Great Hall — and nobody publishes its dimensions, which is its own kind of answer.
When you can get in. Eight hours a week, Friday and Saturday mornings. The hours.

That last one is the real differentiator and it is the opposite of a superlative. A building open two mornings a week is a building most visitors to Rome will never see the inside of, and that is a better reason to spend a Saturday on it than anybody’s adjective.

A lemon tree in a terracotta pot beside a zinc watering can on raked gravel — A potted lemon and a watering can on gravel — a still life of the ordinary equipment of a garden. Not this palace’s garden, and not photographed here.

Insider tip

If you want a comparison rather than a ranking, take the one this site can do with arithmetic: the Borghese ticket carries 3,595 ratings against this palace’s 898 — four times as many. That is a measure of how much each is booked through one platform, and nothing at all about which room is finer. The worth-it page does the choice properly.

Book the admission

Free cancellation up to 24 hours before departure on most tours — book now, decide later.

Frequently asked questions

What is the most beautiful palace in Rome?

There is no answer to that. Beauty is not a fact and this site does not rank buildings by looks. Choose on what is checkable instead: what is inside, how long it has been one family’s, and when you can get in.

What is the largest palace on Earth?

It depends on the measure. By floor area the Louvre Palace at 244,000 m²; by the enclosed area inside its walls Guinness World Records gives it to the Forbidden City at 728,000 m²; the largest residential palace is Istana Nurul Iman in Brunei at 200,000 m².

How big is Palazzo Colonna compared with those?

It is not in that conversation. Palazzo Colonna is a private city palace on a Roman street, and its interest was never its size.