Westminster Underground Station, London, United Kingdom
CONFIRMEDDate confidence: CONFIRMEDStated as firmHow firmly the source words the date: confirmed, scheduled, estimated, delayed or unverified.Show all CONFIRMED pins82% CONFIDENCEOverall confidence: 82%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 Jubilee line platforms were opened on 22 December 1999."The deep-level Jubilee line platforms at Westminster Underground opened, completing London's £3.5bn Jubilee Line Extension after engineers dug a 39-metre station box beside the Thames without disturbing Big Ben's foundations.
≈$4.5B
1.00
