You've probably seen a basilica or two. They're very important religious buildings, which is why they're often a tourist attraction. But do you really know what a basilica is? How does it differ from a cathedral? The two buildings look very similar, but they're not the same.
In this article, we'll explain what a basilica is and what its function is. Furthermore, to avoid confusion with a cathedral or a church, we'll also discuss how it differs from these two buildings. If you'd like to learn more about these imposing structures, I recommend you keep reading.
What function does a basilica have?

Before discussing its function, let's first explain what a basilica is. This term comes from Latin and Greek and translates as "royal" or "royal." It is actually an ellipsis of the Greek expression βασιλική οἰκία ( basiliké oikía ), which means "royal house." Its name already suggests that it was a very sumptuous building in Greece and Rome. Basilicas were public and were often used as courts. They also occupied an important place in the forum of Roman cities.
However, that wasn't the only function these majestic buildings served. Roman basilicas had multiple uses, which we will list below:
- Meeting place for citizens to deal with various community issues
- Market
- Cult place
- Justice administration
- Place of financial transactions
Architecturally, basilicas were large, rectangular halls composed of one or more naves, always an odd number. If there was more than one nave, the central one was always the tallest and widest, supported by several columns. To illuminate the hall, they took advantage of the difference in height by opening windows in the upper part of the walls. An apse or exedra was usually located at one end of the main nave. The presiding official was typically seated there. At the opposite end was the entrance through a portico.
Later in history, when Christianity emerged in the 4th century, Christians repurposed many Roman buildings to establish official religious sites for celebrating the liturgy. Among these buildings were basilicas. Once the Roman Empire officially converted to Christianity, the term "basilica" began to be used to refer to important, large churches that enjoyed certain privileges for worship and special rites. Therefore, we can discuss these buildings from both a religious and an architectural perspective.
What is needed for a church to be a basilica?
Now that we know what a basilica is and what its function is, let's see what makes it officially such a remarkable church. While it's true that they were built long before Christianity emerged, these buildings are considered churches. But what's the difference? For an ordinary church to be considered a basilica, it must receive that honorary title. This is the responsibility of the Pope himself. However, for him to grant such an honor, the church must meet at least one of these three conditions:
- Possess unique relics of remarkable importance.
- Being an important pilgrimage destination attended by many faithful.
- Have a high architectural value.
Since basilicas have a rather unique relationship with the Pope and the See of Rome, they are all permitted to have their own coat of arms and to display papal insignia. These coats of arms have the following external ornamentation:
- Basilica emblem with the traditional insignia of the Popes: They are the keys of gold and silver that intersect. They represent the keys of the Kingdom.
- The pavilion: The conopeo identifies the vacant apostolic see and the basilicas. Normally it has the traditional papal colors, which would be gold and deep red. In this way the connection of that building with the Holy See is reflected.
- Temple motto: It is located under the shield, in a displayed badge.
What is the difference between a cathedral and a basilica?

It's not uncommon to confuse imposing religious buildings like basilicas and cathedrals. While they are very similar, there is a significant difference in their relative importance. Both basilicas and cathedrals are churches. But what exactly is a church? This term can be defined in two ways. One is the congregation of Christians, and the other is the building dedicated to divine worship. Within this second definition, we find different types of churches, such as basilicas and cathedrals, whose main difference lies in their significance.
As we mentioned earlier, basilicas were built long before Christianity emerged. These large, strikingly designed buildings are used today primarily for religious instruction, but in ancient times, the Greeks and Romans used them as courts of law. Since the 4th century, after the birth of Christianity, they have been considered special churches, those granted the honorary title of basilica by the Pope, fulfilling at least one of the requirements listed in the previous section. If you would like to learn more about the differences between a basilica and a cathedral , this article may be of interest.
We only have one question left to answer: What is a cathedral? This type of building can be found all over the world, and its dimensions and architectural styles vary greatly. Unlike basilicas, the oldest known cathedrals date back to the dawn of Christianity. However, the main difference between the two types of churches is that a basilica is so by honorary title, while a cathedral houses the cathedra, or seat, of the bishop of the respective diocese. Therefore, we could say that it is the principal Christian church in the region.
With all this information I hope I have clarified what a basilica is and how it differs from a cathedral. Without a doubt, they are extremely beautiful and impressive buildings that are worth visiting, if we have the chance.