Jungfraujoch, Bernese Alps, Switzerland
CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins87% CONFIDENCEOverall confidence: 87%How well the pin's source and references back up its dates.Weighted average of how firmly 3 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
Happened as dated, per the source[1]: "The Sphinx observatory ... was completed in 1937."The Sphinx Observatory, a research station tunnelled into a 3,571-metre Alpine summit above the Jungfraujoch, was completed in 1937 as one of Europe's most remote scientific buildings.
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