Where does this come from, and can I check it?

Its floor covers about 15,160 square metres beneath the dome. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a records & extremes fact?

Yes. It sits on the Records & Extremes shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

What else can I read about it?

The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

St Peter's Basilica is the largest church interior

Its floor covers about 15,160 square metres beneath the dome The basilica in Vatican City was completed in 1626 and encloses roughly 15,160 square metres of floor area, more than any other church. Its dome, designed largely by Michelangelo, spans about 42 metres internally. Length is measured from the entrance to the apse at 186 metres, and the building can hold tens of thousands of people. It sits in Mondo's records & extremes collection, one of 200 facts that each trace back to the reference below.

Where this comes from

Britannica

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Ulm Minster has the tallest church towerThe single spire rises 161.5 metres above the German city of Ulm Beijing's Forbidden City is the largest palace complexIts walled compound in central Beijing covers roughly 720,000 square metres Building height is judged by a fixed international ruleThe council measures to the architectural top, and antennas do not count The Great Wall of China measures over 21,000 kilometresThat total counts every branch, trench and natural barrier in the system The Burj Khalifa is 828 metres tallIt has held the tallest building record since 2010 The tallest statue in the world is 182 metres highThe Statue of Unity in Gujarat depicts Vallabhbhai Patel

Tags: churches, vatican, architecture

St Peter's Basilica is the largest church interior: the short answers

Where does this come from, and can I check it?: Its floor covers about 15,160 square metres beneath the dome. The figure is taken from Britannica, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a records & extremes fact?: Yes. It sits on the Records & Extremes shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.