When you think of the ultimate Catholic church, you probably picture St. Peter’s Basilica in the Vatican — with its massive dome, huge plaza, and the Swiss guards all decked out in those colorful uniforms.

Plot twist: St. Peter’s isn’t actually the main church of Rome!

That title belongs to St. John Lateran, a mega-basilica celebrating its 1702nd birthday! That means it has been standing since 324 AD, long before knights in armor, castles, or even the USA existed.

Here are 7 wild, fun, and totally surprising facts about the world’s most epic church:

  1. The Ultimate Roman ‘Trick Question’

If someone asks you, “Who was Saint John Lateran?” — don't fall for it! There is no such person.

The church was originally named after Jesus (Christ the Savior). Later on, they added St. John the Baptist and St. John the Evangelist. “Lateran” is simply the last name of a super-wealthy ancient Roman family who used to own the land! Its official name is a massive mouthful: The Papal Archbasilica of the Most Holy Savior and Sts. John the Baptist and the Evangelist in the Lateran.

The apse of the Basilica of Saint John Lateran in Rome. Place slightly below the Main Altar. (Credit: Shutterstock)
  1. The Pope’s REAL Home Church

While the Pope lives over at the Vatican (when he’s not roaming the streets of South America like he is today!), St. John Lateran is his actual cathedral as the Bishop of Rome. In fact, popes lived at the Lateran Palace for almost 1,000 years!
Carved right over the front doors is an awesome title in Latin:

“Mother and Head of All Churches in the City and the World.”

That means this single building is considered the “Mother Church” for all 1.3 billion Catholics on Earth!

  1. Recycling Ancient Roman Empire Doors!

Ever wonder what happened to the ancient Roman Empire? Well, the Church literally recycled it!

The giant, heavy bronze doors at the main entrance of St. John Lateran weren't made for the church. They were unbolted and taken directly from the Curia Julia — the actual Senate House in the ancient Roman Forum where Roman senators used to govern the empire. You are walking through the exact same doors ancient Romans used thousands of years ago!

Interior of the Basilica of Saint John Lateran in Rome. (Credit: Shutterstock)
  1. The Dream That Saved a Falling Building

Back in the 1200s, Pope Innocent III had a crazy nightmare: he saw the massive walls of St. John Lateran cracking, tilting, and about to crash to the ground. But right as it was falling, a poor man dressed in rags stepped in and held the whole building up on his shoulders!

A few days later, a humble monk named St. Francis of Assisi walked in to ask permission to start his new order. The Pope recognized Francis as the man from his dream, realizing God was using him to support the whole Church!

Since 1723, at the request of Pope Innocent XIII, the Scala Sancta (Holy Stairway) was covered by a wooden casing in order to avoid the wear of the stone. (Credit: Shutterstock)
  1. Holy Stairs and Flying Relics

Just across the street from the church sits the Scala Santa (The Holy Stairs). According to tradition, St. Helena (the mother of Emperor Constantine) traveled to Jerusalem and brought back the exact marble staircase that Jesus walked up when he was put on trial by Pontius Pilate! Today, pilgrims visit to climb all 28 marble steps on their knees.

The sanctuary of the Holy Stairs, erected by Sixtus V between 1588 and 1590, has always been a privileged place of prayer for the popes. (Credit: Shutterstock)
  1. It Survived Earthquakes, Fires, and Even the Mafia!

St. John Lateran is like the ultimate action-movie survivor. Over 1,700 years, it has been:


Burned down by massive fires twice (in 1309 and 1361).
Rattled by huge earthquakes that cracked its foundation.
Sacked by invading armies.
Hit by a mafia car-bomb in July 1993!

Even through all the chaos, the church was rebuilt, restored, and stands taller than ever.

  1. A Birthday So Big It Beats Sunday!

In the Church calendar, every single day has a special rank. Usually, Sundays are the biggest deal of the week. But two years ago, the 1,700th birthday of St. John Lateran was considered so important for the entire world that its feast day actually outranked a regular Sunday! When Nov. 9 falls on a weekend, the whole world skips the usual Sunday Mass readings to celebrate this incredible ancient building.

Pope Leo XIV presides over the evening Mass of the "Lord's Supper" at the Basilica of St. John Lateran on April 2, 2026. (Credit: Shutterstock)
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