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Case file

Great Mosque of Aleppo

Wikipedia's first sentence called it “largest and oldest mosque in the city of aleppo in northern syria”. Today it says “largest and one of the oldest mosques in the city of aleppo”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
We saved snapshots of this article over twenty years; you are reading the 2025 one. Red dashes: removed from Wikipedia since. Pale dots: rewritten; the numbered note shows what it says now. 1 tap a number or a side note to jump between them
The opening as it read in 2025

Great Mosque of Aleppo , also known as the Great Umayyad Mosque of Aleppo , is the largest and one of the oldest mosques in the city of Aleppo , Syria built by the Umayyad Caliphate. It is located in the al-Jalloum district of the Ancient City of Aleppo , a World Heritage Site , near the entrance to Al-Madina Souq . The mosque is purportedly home to the remains of Zechariah , the father of John the Baptist , both of whom are revered in Islam and Christianity . It was built in the beginning of the 8th century CE by the Muslim Arabs. However, the current building dates back to the 11th through 14th centuries. The minaret in the mosque was built in 1090, and was destroyed during fighting in the Syrian Civil War in April 2013. It is made of flat niches – as opposed to concave muqarnas cells – and entirely decorated with tiny arabesques. The style of this minaret's decoration reveals the continuity of Syrian pre-Islamic Arab-Syrian blended with Roman architectural heritage. Museum with No Frontiers . 2004–2018 . Historical Dictionary of Architecture (2 ed.). Gospel of Luke , Luke 1:5–79 ed. "Syria clashes destroy ancient Aleppo minaret" . bbc.co.uk. There are <ref group=lower-alpha> tags or templates on this page, but the references will not show without a template or template (see the help page ).

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1284579520.
Today
Wikipedia's first sentence called it “largest and oldest mosque in the city of aleppo in northern syria”. Today it says “largest and one of the oldest mosques in the city of aleppo”. Read the current article and compare.
201020152020Oct '232025
Counts in the opening at each snapshot. Green: the word gained ground. Red: it was cut. Grey: no change.

What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.

Then

largest and oldest mosque in the city of aleppo in northern syria

Now

largest and one of the oldest mosques in the city of aleppo

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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