References 581% CONFIDENCEOverall confidence: 81%How well the pin's source and references back up its dates.Weighted average of how firmly 5 references, the source included, support the pin's start and end times; a reference counts half as much for every 180 days older than the newestShow all pins at 75% confidence or better
The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
- [1]90%youtube.com/watch?v=2ftGeALPlzQyoutube.com· Posted Sep 15, 2026· Starts Mar 31, 1889 ✓· 19% of score
History.com[4] and the Eiffel Tower’s own history page date the structure’s completion and dedication ceremony to 31 March 1889.
- [2]85%Eiffel Tower - Simple English Wikipedia
Published project cost: “The Tower cost 7,799,401.31 French gold francs to build in 1889”[1]
- [3]55%Massive Structures: Mega-Towers Compared | Legends vs Modern Icons | FD Engineeringyoutube.com· Added Sep 15, 2026· 19% of score
Comparison episode covering the Eiffel Tower alongside Tokyo Skytree.[1]
- [4]85%Eiffel Tower opens in Paris | History.comhistory.com· Added Sep 15, 2026· 19% of score
- [5]90%Eiffel Tower - Wikipediaen.wikipedia.org· Added Sep 15, 2026· 19% of score
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