Big Ben
Every five years or so, crew members scale the 316-foot-tall clock to scrub its four timepieces, each containing 312 pieces of opal glass. And time doesn’t stop: Workers dodge the moving minute and hour hands, which measure nearly 14 and nine feet long, respectively! The next scheduled cleaning is in the 2020s. Before you book a flight to see it, these are the 13 things airlines don’t want you to know.
from Reader's Digest http://ift.tt/2eDZl5c
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